Release v1.4.1

IMPROVEMENTS:

• core [UriUtils.java, CellEsImpl.java,TokenEndPointResource.java etc] :
  
  A new custom URL scheme personium-localunit is introduced for more flexible server operation.
  
  It is now supported in major APIs handling URL.
  • You can write personium-localunit:/cell1/ instead of https://myunit.example/cell1/ in fields such as Box.Schema or ExtCell.Url when referring within the same Unit.
  • In previous versions, Unit FQDN change requires data conversion in most cases.
  • By using this new URL scheme, links among Cells on a Unit can be kept without data conversion after Unit FQDN change.

BUG FIXES:

• core [DcEngineSvcCollectionResource.java etc], engine [FsServiceResourceSourceManager.java etc]:
  
  The script file could not be loaded for enabling custom API was fixed. (Issue #27)
• core [DavCmpFsImpl.java]:
  
  The bug that the content length is always reset to 0 at updating WebDAV file was fixed.(Issue #29)