Removed unnecessary @.'s

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

remove example.com from example.com/tos
Remove empty helpers
someone accidentally a word
Remove some gems because they are never used in this project.
Merge pull request #34 from mharen/master

Fix minor type in README.md (someone accidentally a word)
Merge pull request #22 from sandal/patch-1

Fix typo in AUTHORS.md
Don't enable Cache-Control if the site has restricted access.
Oops, that should be 1.minute
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.
Use double quotes in image uploads instead of single quotes. Our sanitizer seems to
hate single quotes.
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