Bump build number.
setting attempts fully on every request, rather than incrementing.
avoid incrementing in videos for total_seconds_watched; set explicitly every time.
fixing trailing comma, which breaks some builds of IE
variable renaming
Merge pull request #642 from bcipolli/set_attempts

Set ex:attempts and vid:total_seconds_watched directly, not incrementally
updating build
Merge branch 'hotfix' of github.com:learningequality/ka-lite into release-0.10

Conflicts:
	kalite/main/api_views.py
Merge branch 'release-0.10' of github.com:learningequality/ka-lite into release-0.10