adjust spinner box design to ownCloud look
Add activities for shared users when a file is added or deleted

Fix #1670
Fix activities and links when folders and files are shared:
* When sharing via link, the activity link leads to the user's root instead of the folder
* When sharing an item with a user, the links always lead to the new user's target folder
* When sharing an item with a group, an activity was created for the group
Do not loop over all shares unneccessarily
Fix sharing an item with a group
Do not add activities for .part files

Fix owncloud/core#7950
Change type to string and use one preference per type
Correctly store unselected user setting
Filter users by their settings before adding the activity for them.
[tx-robot] updated from transifex
[tx-robot] updated from transifex
[tx-robot] updated from transifex
[tx-robot] updated from transifex
[tx-robot] updated from transifex
Use userid as key in filtered list to allow isset() checks
Correctly initialise $user
Fix order of arguments in array_chunk()
Fix some small failures in the template
Prepare code layout and loops for email settings
Fix getSourcePathAndOwner() for reshares