diff --git a/Gemfile.lock b/Gemfile.lock
index e3b926e..88f21ce 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,61 +1,62 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    actioncable (5.2.4.4)
-      actionpack (= 5.2.4.4)
+    actioncable (5.2.6)
+      actionpack (= 5.2.6)
       nio4r (~> 2.0)
       websocket-driver (>= 0.6.1)
-    actionmailer (5.2.4.4)
-      actionpack (= 5.2.4.4)
-      actionview (= 5.2.4.4)
-      activejob (= 5.2.4.4)
+    actionmailer (5.2.6)
+      actionpack (= 5.2.6)
+      actionview (= 5.2.6)
+      activejob (= 5.2.6)
       mail (~> 2.5, >= 2.5.4)
       rails-dom-testing (~> 2.0)
-    actionpack (5.2.4.4)
-      actionview (= 5.2.4.4)
-      activesupport (= 5.2.4.4)
+    actionpack (5.2.6)
+      actionview (= 5.2.6)
+      activesupport (= 5.2.6)
       rack (~> 2.0, >= 2.0.8)
       rack-test (>= 0.6.3)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.0.2)
-    actionview (5.2.4.4)
-      activesupport (= 5.2.4.4)
+    actionview (5.2.6)
+      activesupport (= 5.2.6)
       builder (~> 3.1)
       erubi (~> 1.4)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.0.3)
-    activejob (5.2.4.4)
-      activesupport (= 5.2.4.4)
+    activejob (5.2.6)
+      activesupport (= 5.2.6)
       globalid (>= 0.3.6)
-    activemodel (5.2.4.4)
-      activesupport (= 5.2.4.4)
-    activerecord (5.2.4.4)
-      activemodel (= 5.2.4.4)
-      activesupport (= 5.2.4.4)
+    activemodel (5.2.6)
+      activesupport (= 5.2.6)
+    activerecord (5.2.6)
+      activemodel (= 5.2.6)
+      activesupport (= 5.2.6)
       arel (>= 9.0)
-    activestorage (5.2.4.4)
-      actionpack (= 5.2.4.4)
-      activerecord (= 5.2.4.4)
-      marcel (~> 0.3.1)
-    activesupport (5.2.4.4)
+    activestorage (5.2.6)
+      actionpack (= 5.2.6)
+      activerecord (= 5.2.6)
+      marcel (~> 1.0.0)
+    activesupport (5.2.6)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.7.0)
+    addressable (2.8.0)
       public_suffix (>= 2.0.2, < 5.0)
+    amazing_print (1.4.0)
     arel (9.0.0)
-    ast (2.4.1)
+    ast (2.4.2)
     benchmark_methods (0.7)
-    better_errors (2.8.3)
+    better_errors (2.9.1)
       coderay (>= 1.0.0)
       erubi (>= 1.0.0)
       rack (>= 0.9.0)
-    bibtex-ruby (5.1.4)
+    bibtex-ruby (6.0.0)
       latex-decode (~> 0.0)
-    binding_of_caller (0.8.0)
+    binding_of_caller (1.0.0)
       debug_inspector (>= 0.0.1)
-    bolognese (1.8.13)
+    bolognese (1.9.7)
       activesupport (>= 4.2.5)
       benchmark_methods (~> 0.7)
       bibtex-ruby (>= 5.1.0)
@@ -73,7 +74,7 @@ GEM
       loofah (~> 2.0, >= 2.0.3)
       maremma (>= 4.7, < 5)
       namae (~> 1.0)
-      nokogiri (~> 1.10.4)
+      nokogiri (~> 1.11.2)
       oj (~> 3.10)
       oj_mimic_json (~> 1.0, >= 1.0.1)
       postrank-uri (~> 1.0, >= 1.0.18)
@@ -81,84 +82,87 @@ GEM
       rdf-turtle (~> 3.1)
       thor (>= 0.19)
     builder (3.2.4)
-    capybara (3.33.0)
+    capybara (3.36.0)
       addressable
+      matrix
       mini_mime (>= 0.1.3)
       nokogiri (~> 1.8)
       rack (>= 1.6.0)
       rack-test (>= 0.6.3)
-      regexp_parser (~> 1.5)
+      regexp_parser (>= 1.5, < 3.0)
       xpath (~> 3.2)
     citeproc (1.0.10)
       namae (~> 1.0)
-    citeproc-ruby (1.1.12)
+    citeproc-ruby (1.1.14)
       citeproc (~> 1.0, >= 1.0.9)
-      csl (~> 1.5)
+      csl (~> 1.6)
     coderay (1.1.3)
     colorize (0.8.1)
-    concurrent-ruby (1.1.7)
-    crack (0.4.4)
+    concurrent-ruby (1.1.9)
+    crack (0.4.5)
+      rexml
     crass (1.0.6)
-    csl (1.5.1)
+    csl (1.6.0)
       namae (~> 1.0)
-    csl-styles (1.0.1.10)
+      rexml
+    csl-styles (1.0.1.11)
       csl (~> 1.0)
     dalli (2.7.11)
-    debug_inspector (0.0.3)
-    diff-lcs (1.4.4)
-    docile (1.3.2)
+    debug_inspector (1.1.0)
+    diff-lcs (1.5.0)
+    docile (1.4.0)
     dotenv (2.7.6)
-    ebnf (2.1.1)
+    ebnf (2.3.0)
+      amazing_print (~> 1.4)
       htmlentities (~> 4.3)
-      rdf (~> 3.1)
+      rdf (~> 3.2)
       scanf (~> 1.0)
-      sxp (~> 1.1)
-    edtf (3.0.5)
-      activesupport (>= 3.0, < 7.0)
+      sxp (~> 1.2)
+      unicode-types (~> 1.7)
+    edtf (3.0.7)
+      activesupport (>= 3.0, < 8.0)
     equivalent-xml (0.6.0)
       nokogiri (>= 1.4.3)
-    erubi (1.9.0)
+    erubi (1.10.0)
     excon (0.71.1)
-    faraday (0.17.3)
+    faraday (0.17.4)
       multipart-post (>= 1.2, < 3)
     faraday-encoding (0.0.5)
       faraday
     faraday_middleware (0.14.0)
       faraday (>= 0.7.4, < 1.0)
-    ffi (1.13.1)
+    ffi (1.15.4)
     gender_detector (0.1.2)
       unicode_utils (>= 1.3.0)
-    git (1.7.0)
+    git (1.10.1)
       rchardet (~> 1.8)
-    globalid (0.4.2)
-      activesupport (>= 4.2.0)
-    haml (5.2.0)
+    globalid (1.0.0)
+      activesupport (>= 5.0)
+    haml (5.2.2)
       temple (>= 0.8.0)
       tilt
-    hamster (3.0.0)
-      concurrent-ruby (~> 1.0)
     hashdiff (1.0.1)
     htmlentities (4.3.4)
-    i18n (1.8.5)
+    i18n (1.8.11)
       concurrent-ruby (~> 1.0)
     iso8601 (0.9.1)
     jaro_winkler (1.5.4)
-    json (2.3.1)
-    json-canonicalization (0.2.0)
-    json-ld (3.1.4)
+    json (2.6.1)
+    json-canonicalization (0.3.0)
+    json-ld (3.2.0)
       htmlentities (~> 4.3)
-      json-canonicalization (~> 0.2)
+      json-canonicalization (~> 0.3)
       link_header (~> 0.0, >= 0.0.8)
-      multi_json (~> 1.14)
-      rack (~> 2.0)
-      rdf (~> 3.1)
-    json-ld-preloaded (3.1.3)
-      json-ld (~> 3.1)
-      rdf (~> 3.1)
+      multi_json (~> 1.15)
+      rack (~> 2.2)
+      rdf (~> 3.2)
+    json-ld-preloaded (3.2.0)
+      json-ld (~> 3.2)
+      rdf (~> 3.2)
     jsonlint (0.3.0)
       oj (~> 3)
       optimist (~> 3)
-    latex-decode (0.3.1)
+    latex-decode (0.3.2)
     link_header (0.0.8)
     listen (3.0.8)
       rb-fsevent (~> 0.9, >= 0.9.4)
@@ -171,14 +175,13 @@ GEM
     logstash-event (1.2.02)
     logstash-logger (0.26.1)
       logstash-event (~> 1.2)
-    loofah (2.7.0)
+    loofah (2.13.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.1)
       mini_mime (>= 0.1.1)
-    marcel (0.3.3)
-      mimemagic (~> 0.3.2)
-    maremma (4.7.2)
+    marcel (1.0.2)
+    maremma (4.7.4)
       activesupport (>= 4.2.5)
       addressable (>= 2.3.6)
       builder (~> 3.2, >= 3.2.2)
@@ -186,96 +189,99 @@ GEM
       faraday (~> 0.17.3)
       faraday-encoding (~> 0.0.4)
       faraday_middleware (~> 0.14.0)
-      nokogiri (~> 1.10.4)
+      nokogiri (~> 1.11.2)
       oj (>= 2.8.3)
       oj_mimic_json (~> 1.0, >= 1.0.1)
+    matrix (0.4.2)
     method_source (1.0.0)
-    mimemagic (0.3.5)
-    mini_mime (1.0.2)
-    mini_portile2 (2.4.0)
-    minitest (5.14.2)
+    mini_mime (1.1.2)
+    mini_portile2 (2.5.3)
+    minitest (5.15.0)
     multi_json (1.15.0)
     multipart-post (2.1.1)
-    namae (1.0.1)
-    nio4r (2.5.4)
-    nokogiri (1.10.10)
-      mini_portile2 (~> 2.4.0)
-    oj (3.10.14)
+    namae (1.1.1)
+    nio4r (2.5.8)
+    nokogiri (1.11.7)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
+    oj (3.13.11)
     oj_mimic_json (1.0.1)
     optimist (3.0.1)
-    parallel (1.19.2)
-    parser (2.7.2.0)
+    parallel (1.21.0)
+    parser (3.1.0.0)
       ast (~> 2.4.1)
     postrank-uri (1.0.24)
       addressable (>= 2.4.0)
       nokogiri (>= 1.8.0)
       public_suffix (>= 2.0.0, < 2.1)
     public_suffix (2.0.5)
+    racc (1.6.0)
     rack (2.2.3)
     rack-cors (1.1.1)
       rack (>= 2.0.0)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
-    rails (5.2.4.4)
-      actioncable (= 5.2.4.4)
-      actionmailer (= 5.2.4.4)
-      actionpack (= 5.2.4.4)
-      actionview (= 5.2.4.4)
-      activejob (= 5.2.4.4)
-      activemodel (= 5.2.4.4)
-      activerecord (= 5.2.4.4)
-      activestorage (= 5.2.4.4)
-      activesupport (= 5.2.4.4)
+    rails (5.2.6)
+      actioncable (= 5.2.6)
+      actionmailer (= 5.2.6)
+      actionpack (= 5.2.6)
+      actionview (= 5.2.6)
+      activejob (= 5.2.6)
+      activemodel (= 5.2.6)
+      activerecord (= 5.2.6)
+      activestorage (= 5.2.6)
+      activesupport (= 5.2.6)
       bundler (>= 1.3.0)
-      railties (= 5.2.4.4)
+      railties (= 5.2.6)
       sprockets-rails (>= 2.0.0)
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
-    rails-html-sanitizer (1.3.0)
+    rails-html-sanitizer (1.4.2)
       loofah (~> 2.3)
-    railties (5.2.4.4)
-      actionpack (= 5.2.4.4)
-      activesupport (= 5.2.4.4)
+    railties (5.2.6)
+      actionpack (= 5.2.6)
+      activesupport (= 5.2.6)
       method_source
       rake (>= 0.8.7)
       thor (>= 0.19.0, < 2.0)
     rainbow (3.0.0)
-    rake (13.0.1)
-    rb-fsevent (0.10.4)
+    rake (13.0.6)
+    rb-fsevent (0.11.0)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     rchardet (1.8.0)
-    rdf (3.1.6)
-      hamster (~> 3.0)
+    rdf (3.2.2)
       link_header (~> 0.0, >= 0.0.8)
-    rdf-aggregate-repo (3.1.0)
-      rdf (~> 3.1)
-    rdf-rdfa (3.1.2)
-      haml (~> 5.1)
+    rdf-aggregate-repo (3.2.0)
+      rdf (~> 3.2)
+    rdf-rdfa (3.2.0)
+      haml (~> 5.2)
       htmlentities (~> 4.3)
-      rdf (~> 3.1, >= 3.1.2)
-      rdf-aggregate-repo (~> 3.1)
-      rdf-vocab (~> 3.1, >= 3.1.5)
-      rdf-xsd (~> 3.1)
-    rdf-rdfxml (3.1.0)
+      rdf (~> 3.2)
+      rdf-aggregate-repo (~> 3.2)
+      rdf-vocab (~> 3.2)
+      rdf-xsd (~> 3.2)
+    rdf-rdfxml (3.2.0)
       htmlentities (~> 4.3)
-      rdf (~> 3.1)
-      rdf-rdfa (~> 3.1)
-      rdf-xsd (~> 3.1)
-    rdf-turtle (3.1.2)
-      ebnf (~> 2.0)
-      rdf (~> 3.1, >= 3.1.2)
-    rdf-vocab (3.1.8)
-      rdf (~> 3.1, >= 3.1.2)
-    rdf-xsd (3.1.0)
-      rdf (~> 3.1)
-    regexp_parser (1.8.2)
+      rdf (~> 3.2)
+      rdf-rdfa (~> 3.2)
+      rdf-xsd (~> 3.2)
+    rdf-turtle (3.2.0)
+      ebnf (~> 2.3)
+      rdf (~> 3.2)
+    rdf-vocab (3.2.0)
+      rdf (~> 3.2)
+    rdf-xsd (3.2.0)
+      rdf (~> 3.2)
+      rexml (~> 3.2)
+    regexp_parser (2.2.0)
     request_store (1.5.0)
       rack (>= 1.4)
+    rexml (3.2.5)
     rspec-core (3.9.3)
       rspec-support (~> 3.9.3)
-    rspec-expectations (3.9.2)
+    rspec-expectations (3.9.4)
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.9.0)
     rspec-mocks (3.9.1)
@@ -289,7 +295,7 @@ GEM
       rspec-expectations (~> 3.9.0)
       rspec-mocks (~> 3.9.0)
       rspec-support (~> 3.9.0)
-    rspec-support (3.9.3)
+    rspec-support (3.9.4)
     rubocop (0.77.0)
       jaro_winkler (~> 1.5.1)
       parallel (~> 1.10)
@@ -303,7 +309,7 @@ GEM
       activesupport
       rack (>= 1.1)
       rubocop (>= 0.72.0)
-    ruby-progressbar (1.10.1)
+    ruby-progressbar (1.11.0)
     scanf (1.0.0)
     sentry-raven (2.13.0)
       faraday (>= 0.7.6, < 1.0)
@@ -319,26 +325,28 @@ GEM
     sprockets (3.7.2)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
-    sprockets-rails (3.2.2)
-      actionpack (>= 4.0)
-      activesupport (>= 4.0)
+    sprockets-rails (3.4.2)
+      actionpack (>= 5.2)
+      activesupport (>= 5.2)
       sprockets (>= 3.0.0)
-    sxp (1.1.0)
-      rdf (~> 3.1)
+    sxp (1.2.0)
+      matrix
+      rdf (~> 3.2)
     temple (0.8.2)
-    thor (1.0.1)
+    thor (1.2.1)
     thread_safe (0.3.6)
     tilt (2.0.10)
-    tzinfo (1.2.7)
+    tzinfo (1.2.9)
       thread_safe (~> 0.1)
     unicode-display_width (1.6.1)
+    unicode-types (1.7.0)
     unicode_utils (1.4.0)
     vcr (3.0.3)
-    webmock (3.9.2)
-      addressable (>= 2.3.6)
+    webmock (3.14.0)
+      addressable (>= 2.8.0)
       crack (>= 0.3.2)
       hashdiff (>= 0.4.0, < 2.0.0)
-    websocket-driver (0.7.3)
+    websocket-driver (0.7.5)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.5)
     xpath (3.2.0)