Create fr.yml

Add french translation.
Split fr.yml into client.fr.yml + server.fr.yml
Include /^http… prefix in onebox whitelist URLs regexes to prevent XSS.
Be more selective about when we allow oembed discovery
Allow oneboxers to specify their simple_onebox text is unsafe
Notifications on PMs respect access rights.
Merge branch 'onebox-safety' of git://github.com/tms/discourse
Remove leftover sub-tag support.
Merge pull request #197 from mquandalle/master

French translation
Remove leftover sub-tag support.
Merge branch 'master' of github.com:discourse/discourse
Revert "Merge branch 'onebox-safety' of git://github.com/tms/discourse"

This reverts commit 7ca57db97afda4d1c130269061f0db3cb9d0dd42, reversing
changes made to b7e027cfd1590365ac9c85141ff2b02c25e900fb.
filter out closed/archived/invisible topics from suggested
Allow oneboxers to specify their simple_onebox text is unsafe
Add version checking that shows on the admin dashboard
Support for Fancy topic titles
Merge branch 'onebox-safety' of git://github.com/tms/discourse
Fix the missing {{provider}} value message
Update docs/DEVELOPER-ADVANCED.md

Seed download link was wrong
Custom messages for the footers of all list views