Fix signup confirmation email
Update font-awesome-sass
Update Rails to 4.1.1 & bcrypt-ruby has been renamed to bcrypt.

* `bcrypt-ruby` now `bcrypt`

    Ref. https://github.com/rails/rails/commit/53f1ab523bbf4f1764e3e24f26c4ed1db61b69e7 and https://github.com/codahale/bcrypt-ruby/pull/86.
Update donate link
add zh-TW locale
Fix total page bug

Topic#total_pages return wrong result, if comments_count == Comment.default_per_page
Setting firewall
Fixed typo in Gemfile #31
Update rails 4.1.3
Password reset email case insensitive, fix #32
Fix compatible issues with trashable and counter_cache