error not required at all, fixes #2854
fixes overflow issues
fix line positioning
Bump to Django 1.6.2 in sample requirements.txt.
fix info hover issues
set offset to a lower bound
fix drag and drop restriction
Merge pull request #2858 from timgraham/django1.6-bump

Bump to Django 1.6.2 in sample requirements.txt.
Merge pull request #2856 from FinalAngel/develop

Tree and error fixes
reproduce
fixes issues #2840 #2852
Merge pull request #2864 from FinalAngel/develop

fixes issues #2840 #2852
don't fail if not able to get object
Merge branch 'develop' into fix-2861
fixes issues #2818 #2815
prevent first ajax call
reduces queries
Merge pull request #2866 from digi604/fix-2861

Fix 2861 (failing after deleting translation)
fix tests and fixes #2867
partial addition to #2857