Added remember me to login form
Added login simple check feature
Added date to loging simple checking
Fixed login error when email have space character
[login] improved ui of 'remember me'
Added option to configure login remember days
Merge branch 'login' into 2.1
[msg] use ajax to send msg; show 'back to top' in user_msg_list
[logo custom] added logo_width, logo_height
Rewrite group join request
Merge branch '2.1'
Update group join request message
[upload/download] fixed url pattern bug; improved file upload
Update de/fr/hu translations
[client download] improvement
Update Chinese translation
[login] added 'tabindex'
[repo] improved select of dirents
Update timestamp and version
[api2] Add api for ios device register push notification