do not create global variables
support arbitrary attachments
display correct template when attachment or image
post process attachments
don't track via AJAX when clicking on local attachments
refactor optimized_image a bit
update nginx.sample.conf to take attachmetns into account
update back-end specs
update front-end specs
Use the solid envelope icon. Font-awesome swapped icon-envelope and icon-envelope-alt.
automatically approve invited users on forum where moderators must approve (keep in mind only moderators can invite)
speed up specs a touch
allow invite controller to accept an email in absence of user (cleans up API)
Update client.zh_CN.yml

banned: "禁止参与讨论" # can't create or reply topics
blocked: "禁止登陆"   # can't login
Merge pull request #1178 from royguo/patch-2

Update client.zh_CN.yml
Update typo in documentation
Update HEROKU.md

heroku has changed its default ruby version to 2.0.0 , now no need to write ruby version on top the of Gemfile. check https://blog.heroku.com/archives/2013/6/17/ruby-2-default-new-aps
Merge pull request #1179 from iamjarvo/1176_update_install_email_guide

Update typo in documentation
Merge pull request #1177 from ZogStriP/attachments

Attachments
Dutch translation updated
Update client.nb_NO.yml
FIX: deleted_by wasn't showing up on refresh