[Bug 842783] set ALLOWED_HOSTS based on SITE_URL
[Fix Bug 843458] Remove significant whitespace before some </a> tags
Add pytz.
[fix bug 838689] Mozspaces Models and Admin Interface.
Merge pull request #395 from glogiotatidis/838689

[fix bug 838689] Mozspaces Models and Admin Interface.
Merge pull request #403 from Sancus/allowedhosts

[Bug 842783] set ALLOWED_HOSTS based on SITE_URL
Fix avatar path migration script.
Merge pull request #404 from Sancus/bug843458

[Fix Bug 843458] Remove significant whitespace before some </a> tags
[fix bug 839138] Allow url matching for usernames longer then 30 chars.
Merge pull request #406 from glogiotatidis/profile-avatars

Fix avatar path migration script.
Merge pull request #407 from glogiotatidis/839138

[fix bug 839138] Allow url matching for usernames longer then 30 chars.