Add requesttoken to base template

Potentially fixes https://github.com/owncloud/core/issues/12580
Fix permissions
Add unit test for contactsmanager
Use PHPUnit mocks
Mock interface
Remove config file
introduce alt text for rename icon - fixes #12067
translated saved message in files external
Skip headers that can not be split
Add getTagsForObjects in ITags

Returns the list of tags that are set on the given object ids.
remove duplicate loaded personal.js - fixes #12674
Fix namespace of files_encryption classes and autoload them
Fix namespace of Files_Encryption outside of the app
Update OCA\Encryption to OCA\Files_Encryption in the encryption app itself
Use self:: instead of the class name in encryption tests
Correctly namespace encryption tests
Merge pull request #12709 from owncloud/fix-11955

Skip headers that can not be split
Merge pull request #12715 from owncloud/fix-broken-personal-page

remove duplicate loaded personal.js - fixes #12674
Merge pull request #12688 from owncloud/rename-alt

introduce alt text for rename icon - fixes #12067
Merge pull request #12708 from owncloud/l10nsaved

translated saved message in files external