Disable the default login and register form of omniauth identity.
ajust place result doc
allow iframe embed when development env
Fixed rspec tests
add-apt-repository is provided by another package

add-apt-repository is provided by software-properties-common instead of python-software-properties in Ubuntu 14.04
Merge pull request #300 from ixcoin123/patch-2

add-apt-repository is provided by another package
Merge remote-tracking branch 'origin/stable'
1. Add the ablity to sigin by third party services.
2. Change the signup process if user signup by third party servies.
Fixed nginx.conf according to the video tutorial

  * http://knewcoin.com/episodes/53?origin=weibo
Merge pull request #303 from peatio/update_nginx_conf

Fixed nginx.conf according to the video tutorial
Merge branch 'stable'

Conflicts:
	config/nginx.conf
Merge branch 'more-stats-for-admin'
1. Add bind and unbind weibo authentications feature.
2. Refactor this part, move the weibo authentcations related function
from verify to authentications.
Fixed the failed spec.
Make the weibo login configurable.
User can add identity if login from third party service.
Some refactor for the weibo login.
Merge branch 'more-stats-for-admin'
Add 'login via weibo' button on index page.
Merge branch 'master' into third_party_auth