Remove annotate

The annotations are too easy to out of sync with the actual DB structure.
This means it is likely a developer reading them from the file head could
get wrong information about the modal fields. We should read db/schema.rb
instead as that file is guaranteed to always updated.
show captcha after certain times of login failure
refactor omniauth initializer
disable gzip on critical paths to preven BREACH attack
Merge pull request #212 from peatio/limit-signup-and-signin-attempts

Require captcha on too many failed logins and disable gzip on omniauth paths
Use the shorthand of github public repos
Update doc and add instructor of install imagemagick
Update deploy-ubuntu.md
Merge pull request #210 from peatio/remove-annotate

Thanks! :)
Congrats Yes-BTC!
Merge pull request #223 from summm/patch-1

Update deploy-ubuntu.md
Update setup-ubuntu.md
Update setup-osx.md
Update deploy-ubuntu.md
Add an new middleware: utf8-cleaner

  Removes invalid UTF8 characters from the URL