The syntax ?<...> seems to be only supported from PCRE 7.0 on. For
backwards-compability ?P<...> is used.

Fix formatting of bad dates from external storages

Move file thumbnail element into the label tag

Add filter for backend to rest index

Tooltip contains 'Unable to determine date'. Fixes #6395

Show user backend in user management

Added searchByTags to view, storage and cache

* add switch to settings to show user backend
* user classes for headers and rows to unify the show/hide statement
* add user backend to response of user create request
* proper markup in settings area

Remove conditional check for 5.3 compatibility

Add special parameterlist to manager

fix and compress files_external icon

Log exceptions in DAV storage

Correctly inject the language into the subcall

Simple Plugin system for Javascript

remove PHP generated user list and move all to the existing JS part

$userId is now a mandatory parameter for searchByTags.

Also fixed some places in the code where the argument was missing (Node
API and View)

Check for share by link enabled

Display "Shared by link" section only if sharing by link is enabled.

Handle readonly shared files

Ensure user mountpoints are setup when using getUserFolder