Removed unnecessary @.'s

Since CoffeeScript automatically converts @ to this. when immediately followed by a character.
Update app/views/static/faq.html.erb

remove example.com from example.com/tos
Remove empty helpers
Remove some gems because they are never used in this project.
Split -vendor-placeholder selector by vendor.

Some browsers (specifically Firefox(18) that I know of) fail to select
correctly if the selectors are combined. This was fixed in bootstrap
(https://github.com/twitter/bootstrap/blob/master/less/forms.less#L210).
Not sure of the exact commit but there is a nice comment.
Fixed minor typo in lib/guardian.rb

Just a letter switch I found upon browsing the code :)
initial rake db:migrate was failing if hstore was already set
Support for replacing Site Message content with keys specific to a multisite.
Temporary Nuclear option on topic titles - disallow non ascii characters so we
can stay on top of the trolls. This is meant to be replaced soon with a more
permissive and safe method of sanitizing.
Merge pull request #33 from sebasoga/remove_empty_helpers

Remove empty helpers
Merge pull request #7 from mutewinter/fix_at_dot

Removed unnecessary @.'s
Merge pull request #39 from bendoerr/patch-1

Split -vendor-placeholder selector by vendor.
Merge pull request #25 from mlinksva/patch-1

Update app/views/static/faq.html.erb
Merge pull request #44 from bbonamin/patch-1

Fixed minor typo in lib/guardian.rb
Fixed typo in EXISTS sql
Revert "Merge pull request #22 from sandal/patch-1"

This reverts commit 0b6b63f24a8a727e37497263a9e4172effc4da95, reversing
changes made to e2b99f5d33b6664b8cacd0db78c5c53a6c0412f2.
Add moderator style while in topic
Fix typo on AUTHORS.md

Just one character.
Update README.md
Merge pull request #47 from steveklabnik/patch-1

Fix typo on AUTHORS.md