Possible to load old librarys #392

It's now possible to load old librarys. Do this by selecting an already
created library at the beginning.

Known issues:
- Export lib with 3 images, load lib and delete images from it. If you
then load the same library without exporting it images will be missing.
Merge branch 'develop' into playereditor-master
Merge branch 'develop' into codeviewer-master
codeviewer.css syntax error fixed
The numberlines extrabox just for less code.

The numberlines extrabox just shows for samller codeexample.
Additional functionality for quiz create and edit

Some DB changes for Quiz table, example files and php file for  output
Fixed a bug with changing contenteditable

It should now be possible to edit content on the desktop site on mobile
devices
Merge branch 'codeviewer-master' of https://github.com/HGustavs/LenaSYS_2014 into codeviewer-master

Conflicts:
	CodeViewer/js/codeviewer.js
Fixed "Desktop site" button
Linerows buggfix #404
Merge branch 'duggasys-master' into duggasys-Quiz
Merge branch 'playereditor-master' into develop
Merge branch 'duggasys-master' into develop
Merge branch 'duggasys-Quiz' of https://github.com/HGustavs/LenaSYS_2014 into duggasys-Quiz

Conflicts:
	DuggaSys/js/function.js
Merge branch 'duggasys-Quiz' of https://github.com/HGustavs/LenaSYS_2014 into duggasys-Quiz

Conflicts:
	DuggaSys/js/function.js
set height and width on textarea addstudent
Merge branch 'codeviewer-master' into develop
DB updates for Quiz/Dugga
Merge remote-tracking branch 'origin/codeviewer-master' into develop
Fixed datetimepicker bug