expand links with blocks and respect html_safe
use helpers to render requests as posts
assume translations are html safe - at least with view translation helper
html_safe strings to not work in gsub

https://github.com/rails/rails/issues/1734
request fixes for translation and html_safe flow
display 'you are invited' instead of 'request to join' if invited
Merge pull request #46 from Crabgrass/bugfix/3922-no-duplicate-requests

Bugfix/3922 no duplicate requests