Whitespace cleanup

handling proper display of files/folders with negative size

fix for issue #1186, missing variables added

Merge branch 'versioning_history_issue_1189' of github.com:schiesbn/core into versioning_history_issue_1189

Cache prepared statements in OC_DB

Remove uneeded return

Fixing unused and undefined in master

Merge branch 'versioning_history_issue_1189' of github.com:schiesbn/core into versioning_history_issue_1189

LDAP: ability to configure more than one base DN

refs #1162

Expanded one line if statement - Trivial

Oneliners are ugly.

Check if user is admin - bool

Let's remove it, it's also not secure anymore with the introduction of
our API etc...
(And doesn't work with ldap etc…)

Simplify the isSubDirectory() function

user_webdavauth - l10n - Trivial

allow default click behaviour

Thanks Jenkins!

Thx @Raydiation

There was no "isAdminUser()" function which returned bool. This is
irritiating as there were a loooooooot of places in the code which
checked this itself with `OC_Group::inGroup($uid, 'admin)` - why not
use a function for this?
(Especially if you consider that we might change the group name in the
future, which would lead to problems then)

Additionally, @Raydiation needed such a method for his AppFramework :)

otherwise /foo/bar would be detected as a subfolder of /bar

THX @icewind1991

This fixes a problem that prevented app routes from being loaded after ocs_api merge