Fix exit lab button position
handle back link, and add arrows to prev/next/back
Change course number to course name in about course page
Merge branch 'labster/master' of github.com:Bodekaer/Labster.EdX into labster/master
add previous/next/back to wiki link
add 'add students' button in membership page
Add green text notification in add student textarea
Add "Invite Students" button course detail navigation bar next to staff view
Add "Student" prefix in membership title
Merge branch 'labster/release' into labster/master
Rename membership and student admin
Merge branch 'labster/master' of github.com:Bodekaer/Labster.EdX into labster/master
Merge branch 'labster/master' of github.com:Bodekaer/Labster.EdX into labster/master