* makes debugging easier

LDAP: attempt to connect to backup server again, if main server is no…

Share2.0 sharemanager

do not bold heading of update screen

OCS -> ShareManager -> DefaultShareProvider

* Added sharemanager class

This is the central class where all API calls talk to (OCS/Activity).
This in turn talks to the share providers to get the actual sharing
done.

It uses all ShareObjects

* Added share class

Simple class to hold all the share properties that is passed around

* Added IShareProvider interface

Interface that providers os a share have to implement.

Adding more tests to the sharing API.

subadmin methods should not return any null user or group

[files_external] fix empty user mounts setting

Drop unused table file_map

Drop unused tables principalgroups and principals

* was removed in 3e84f170

* used only for windows support
* windows support was dropped in 8.2.0 - see #17379
* was introduced in fd8cb997
* ref #18935

Add coverity badge

Don't lock if we're only reading cache metadata

Coverity now scans our JS code…

adjust comment, this parameter was added for 9.0

* fixes #19858
* if no backend is allowed to be mounted also the user mount setting should be disabled

improve calculation of share recipients

add port to host only, if an URL is used instead of a plain hostname

Fix typo in variable name

Global classes in core CSS