Merge pull request #7 from coati-00/master

Changed team creation to auto generate unique usernames and auto generate passwords like old application
Merge pull request #8 from coati-00/master

Added confirmation to activation and added tests for most django rest views, added functionality to administrator dashboard to add/remove/edit instructors.
Merge pull request #9 from coati-00/master

made small fix to instructor
Merge pull request #10 from coati-00/master

small update to correct initial xml returned for student history
Merge pull request #11 from coati-00/master

more small changes for instructors
Merge pull request #12 from coati-00/master

added csv for history of teams
Merge pull request #13 from coati-00/master

changes to email configuration
Merge pull request #14 from coati-00/master

small updates
Merge pull request #15 from coati-00/activation-tab

Activation tab
Merge remote-tracking branch 'upstream/master'
not sure why but it seems the instructor email template was lost