Keep server directories clean.

Delete *.pyc files from servers on deploy and remove untracked files and
directories from vendor-local.
Merge pull request #547 from glogiotatidis/clean-dirs

Keep server directories clean.
[fix bug 886594] Redirect to Mozillians if an event attendee is Mozillian.
Merge pull request #549 from akatsoulas/886594

[fix bug 886594] Redirect to Mozillians if an event attendee is Mozillia...