This will fix failing tests when shares weren't cleant up on delete due
to missing hooks.

Added login for user1 in setUp().

on xp'ed mode and switching configurations: save raw mode instead of toggling filter mode in tabs since their status is unknown and dealt with by the Wizard. Fixes #11848

This fix gathers the share keys BEFORE a file is moved to make sure that
findShareKeys() is able to find all relevant keys when the file still
exists.

After the move/copy operation the keys are moved/copied to the target
dir.

Also: refactored preRename and preCopy into a single function to avoid
duplicate code.

Added addTranslations and fixed de.js file

Fixed de.js to use OC.L10N.register() and use to correct expected
format.

Added JS unit tests for OC.L10N class

Include translations JS script for all apps

It's only reasonable to have proper type hinting here which might even help us to catch bugs.

Otherwise the function is executed n times which is a lot of overhead

There is not much sense in having these files marked executable, we should avoid that.

Potentially fixes https://github.com/owncloud/core/issues/11742

This also fixes the unit tests

Fixed the following external storages to not connect in the constructor,
but do it on-demand when getConnection() is called.
- S3
- SWIFT
- SFTP

suspend encryption proxy when copying skeleton