update header
add 3rdpart signin
add signin provider in session cookie
add http utils
fix bugs
fix missing import
add arg 'image_url'
remove old signins
fix bugs
add signins management template
add 3rd-part auth
add icon property
remove unused functions
add signin, signout logic in theme
add __signins__ in theme model
update auth template
add bind template
add signins plugin
add weibo signin
add column email for auth_user