Added basic Vagrant support, so that developers can test the application without modifying their local python environment
Merge branch 'master' into add_vagrant_support
Merge branch 'master' into add_vagrant_support
Merge branch 'master' into add_vagrant_support
Adding InvalidView and verify_invite views to whitelist (user should be able to access these without being in beta).

Enforcing login requirements before invitee with new code can be validated.  If user is not logged in, she is redirected to auth login page.  If auth 'next' feature is used, a successful login will then redirect to VerifiedView view.
Merge branch 'add_vagrant_support'
.gitignor-ing Vagrant settings
Added test scenario for invalid Invite Code