Replace fullwidth comma (U+FF0C) with regular one
[sysadmin] improved 'import users'
[sort-lib] change file to a short name
added notification popup and custom scrollbar
ajax popup notices & show priv/grp/grp-reply msg detail at popup page
Refactor user notices
[pdf.js] update pdf.js to v1.0.68

* added 'compatibility.js' to pdf.js
* refactor 'pdf full view'
[pdf full view] fixed 'images' path bug
Implemented the group removal API, delete function of Group view.
Adjusted also the urls file.
Implemented also the rename group web API call
Handle exception when converting timestamp to datetime in translate_seahub_time tag
Merge pull request #240 from bits4beats/master

Implemented the "group removal" and "group rename" API
Merge pull request #236 from rutsky/patch-1

Replace fullwidth comma (U+FF0C) with regular one
[notice] refactor html & js
Refactor rename/remove group api
Merge branch 'notice'
[notice] improved interaction
Fix notice email bug
added 'ajax login check' for notice and my-info, improved html&js for my-info
Minimum password length 8 chars