Update app.php

suppress log message `include path for class \"OC\\Files\\Storage\\SMB\" starts with \"apps\/\"`
Update app.php

suppress log messages like `include path for class \"OC\\Files\\Storage\\Shared\" starts with \"apps\/\"`
Update app.php

suppress log messages like `include path for class \"OCA\\Encryption\\Crypt\" starts with \"apps\/\"`.
Update app.php

suppress log messages like `include path for class \"OCA\\Files_Trashbin\\Hooks\" starts with \"apps\/\"`.
Update app.php

suppress log messages like `include path for class \"OCA\\Files_Versions\\Storage\" starts with \"apps\/\"`.
Update app.php

replaced fixed path to app folder to support multiple apps pathes.
fix files table CSS specificity issue causing multiselect bar overlap, fix #2075
Remove inline js from OC.Dialogs.FilePicker.
Corrects Files Layout in Trashbin
VCategories: Don't forget to save category relations if category exists.
fix expire function
Change remove() $user parameter to optional
Merge pull request #2076 from owncloud/filestable-specificity

fix files table CSS specificity issue causing multiselect bar overlap
Merge pull request #2079 from owncloud/fix_expire_function

fix expire function
Merge pull request #2082 from owncloud/fix-permissions-class

Change remove() $user parameter to optional
Fix #2074 by initializing  as an array
Merge pull request #2084 from owncloud/fix-group-displaynames

Fix #2074 by initializing  as an array
Only send the standard headers

Fixes https://github.com/owncloud/apps/issues/675
Merge pull request #2085 from owncloud/csp_shitty-browsers

Only send the standard headers
Merge pull request #2078 from owncloud/save_category_relations

VCategories: Don't forget to save category relations if category exists.