Simplify workshop / meetings

Remove the concept of sections and meetings and workshops and lessons and just use workshops and meetings
Get test passing

Had to switch a couple to pending for now
Finish with the update to workshops and meetings

Renamed roster to enrollments in routs and controller
Added some user facing features

Added some user facing features (my/profile, my/alumni_membership)

To much to list, just check out the diff.
Add my assets to precompile list
Added username to User model

we push to discourse during the sso process
Updated email address on contact us page
Updated to pass workshop as part of hash
Update Profile, Add placeholder for Account and Payments
Update side menu properly
Fixed typo in partial