Merge pull request #51 from csmith/master

Add new settings for sentry roles.
Use new generic site role
Add required variable
Reduce duplication a bit.
Merge pull request #52 from greboid/feedback-site

Use new generic site role
Use new role
Merge pull request #53 from greboid/feedback-site

Use new role
Proxy sentry to localhost.
Merge pull request #54 from greboid/feedback-site

Proxy sentry to localhost.
Fix bad sentry vars