Add File Detail Api Call
add repo owner api call for admins
api call to get file token details
add api calls for office conversion
add api call to get details for private file share
add shared_by
Merge pull request #165 from urg/ApiRepoOwner

add repo owner api call for admins
Merge pull request #167 from urg/ApiOfficeConvert

add api calls for office conversion
Merge pull request #168 from urg/AddPrivateFileShareApi

add api call to get details for private file share
Merge pull request #162 from urg/AddFileDetailApi

Add File Detail Api Call
Merge branch 'AddFileTokenDetails' of git://github.com/urg/seahub into urg-AddFileTokenDetails

Conflicts:
	seahub/api2/urls.py
	seahub/api2/views.py
Merge branch '2.1'

Conflicts:
	seahub/api2/urls.py
	seahub/api2/views.py