[IMPROVEMENTS & BUGFIXES] Musical sources

[markusweigelt]

• IMPROVEMENT incorporated existing code changes from the score tool of the test system, as they resolved various issues
• IMPROVEMENT refactore multiview implementation for general usage with both functions getDocumentByUid and getDocumentByUrl in Abstract Controller -> Fixes [BUG] Multi-View not working correctly #1302
• BUGFIX Multiview rendering of images
• BUGFIX Fixed an issue with measure selection over the image. The problem was caused by incorrect file group selection due to a change in behavior, which resulted in selecting the first file group instead of the last. 2c350b2
• BUGFIX Score tool condition to render download links -> BUG [BUG] Viewer offers unreasonable downloads #1429 will be resolved in combination with PR of SLUB Digital Collection [BUGFIX] Improve score tool conditions slub/slub_digitalcollections#107
• BUGFIX Default page parameter is setted to 1 if is not valid -> Fixes [BUG] setDefaultPage() is not called when page parameter is not set #1299

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 0.00%. Comparing base (9cc612a) to head (fb6a3c9).
Report is 3 commits behind head on main.

Additional details and impacted files

@@     Coverage Diff      @@
##   main   #1485   +/-   ##
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