*optimized js
*fixed
*added numeration to questions
*fixed
*added picture upload
*fixed
single sign on for spreadsheets extension
*added
Merge branch 'develop' of github.com:open-steam/koala into develop
*fixed layout
* fixed
*fixed
*rfb: changed behavior of sortable items
*added preview of pictures
*fixed numeration
*fixed numeration
*fixed inheritance #2726
*fixed sanctions
*it is possible to add keywords to an object
* photoalbum: figure of keywords
* ticket #2674
*extended error messages
*removed unused JS
* optimized JS
* ticket #2610