Use count SQL to check for user existance
Use the MDB2 function to get the count result
fix navigation hover effect, documentation
additional comments
improved free space calculation if no quota is set, discussed in #2936
adapt free space calculation to the way it is done for the trash bin
correct primary color to #1d2d44 where slightly wrong
Merge pull request #2746 from owncloud/use-count-userexists

Use count SQL to check for user existance
use date and time instead of timestamp
fix admin log display and use a more readable format
Remove not null constraint. Fix #2976
also adjust template properly for log date fix
Merge pull request #2975 from owncloud/log-date

use date and time instead of timestamp in log
make textarea inherit ownCloud font instead of using monospace
Merge pull request #2978 from owncloud/displayname_can_be_null

Remove not null constraint. Fix #2976
move warning and error states together in CSS, to be cleaned up
move password warning more relevant below password field, un-nest log in warning
apply navigation hover effect directly to img and span, cleaner code
remove unnecessary border from navigation, looked strange with scrollbar and pushed the text over 1px
Merge pull request #2925 from owncloud/navigation-icon-fix

fix navigation hover effect, documentation