guiFix:

Fixed the background color on the tag search and filled the page with
the search field.
Merge remote-tracking branch 'origin/guiFix' into dev
Fixed main page gui
us78 - fixed bug: exception was thrown when next/prev button was pressed
in case questions were sorted by creation date
Merge branch 'dev' of https://github.com/danidanone17/YinYangApp.git into dev
Merge remote-tracking branch 'origin/s06-us90' into dev
s06-us90. Switching "NULL" for "N/A" also in the users list (not only in
the user profile, as before).