Add more caching in the group manager
Delay fetching the display name until it is requested
Only check for existence of shared files when doing shared storage setup

The getItemsSharedWith function also retrieves related information,
resulting in work that isn't used here.
Clear the cached user groups when a group is deleted
Also clear cached UserGroup when a user is added/removed
Add unit tests for getUserGroups with addUser and removeUser
Use limit=1 so the db can stop searching on the first hit
Merge branch 'master' into optimize-startup-queries

Conflicts:
	apps/files_sharing/lib/sharedstorage.php
	tests/lib/group/manager.php

removed hasFilesSharedWith from lib/public/share.php and
sharedstorage.php to fix merge
Disable login button until the timezone is set

On slow computers it might happen that the user manages to login before
the timezone code has a chance to run, which then causes dates to appear
wrong in the UI.

This fix makes sure the login cannot happen until the timezone field is
set.

Note that it's not possible to run the timezone code outside of
document.ready() because at that time the DOM element doesn't exist yet.
Fallback for triangle icons
SVG fallback for settings icon
[tx-robot] updated from transifex
Merge pull request #8609 from owncloud/ie8-svgfallbackforicons

SVG fallback for a few icons
[tx-robot] updated from transifex
Merge pull request #8592 from owncloud/login-timezone

Disable login button until the timezone is set
Merge pull request #7363 from owncloud/optimize-startup-queries

Optimize some queries that are always executed when loading base.php
[tx-robot] updated from transifex
allow admin to disable sharing for specific groups of users