Merge pull request #23 from fanzeyi/master

add sns login
fix template
if set domain, user cant set domain again
add salt when get avatar
bug fix
fix css
purge upload avatar
add token imple
Merge branch 'master' of github.com:xiaomen/account
finish weixin bind
add token.get_uid
merge
modify get code method
fix route path error
add csrf exempt
Merge pull request #24 from fanzeyi/weixin

Weixin
add import
Merge pull request #25 from fanzeyi/weixin

add import
add check args method
Merge pull request #26 from fanzeyi/weixin

add check args method