created app forum, with basic models and admin
remove unuser imports and fix AswerVoteInline in forum admin
initial forum data
initial forum view, with template and test
rename course-intro to course and fixed style
remove unecessary import
calculate position for new units
tests for position counter in Unit
improve travis config
missing requirements
added slug field in question
implemented basic question view
merge with master
added autoslug in setting and dependency
forum question using autoslug
question create view and form
added dynamic links
created rest api for question and aswer
add angular-cookies used put csrf token in angular rest posts
allow api urls without slash at the end