modified file upload(get url for every file upload) and notice msg truncation
Fix open document file preview
Add urlencode to file path when view open document
[bugfix] fixed bug in 'set notice read by id' & file view 'back to top'(for pdf)
Fix multi-upload in dir share link
[myhome] improved ui details for some 'long language' such as german
[notice email] improved code
[repo] bugfix and some code improvements
Fix org repo creation
Fix ajax_group_repos in org context
Fix choose default repo for org user
Fix event for org user in api
Merge branch '3.1'
Fix api bug and refactor repo code

Conflicts:
	seahub/urls.py
	seahub/views/__init__.py
[mv-dir] fix bug when move a dir like moving '/dir/' to '/dir2/'
[file-upload] change the error message to 'can not connect the file server'
Refactor file download code, and send messge when downloading file
[api] Fix bug in group creation
Encode message when call send_message
Merge branch '3.1'