Disable the default login and register form of omniauth identity.
generate trade stats
calculate fund stats
calculate wallet stats
calculate top stats
make stats daemon more robust
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.
fetch stats point in task
deliver daily stats mail
fix stats timestamp, use local time
better daily stats mail subject
fill more stats in daily summary
add translations for daily summary
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
calculate member stats