shorten table identifiers in tests

add missing backticks all over the place

convert LIMIT to parameter

recover encryption keys if ownCloud can't change the log-in password

Hook improvements

update 3rdparty submodule

Read configuratons for external filesystem test from a private place.

This will help not to accidentially push private data and enable testing on our ci server.

use pre_setPassword hook to update the encryption keys if the back-end doesn't support password change; improved output to let the admin know what happened

always emit the preSetPassword hook, this should only indicate the intention. Finally the post-hooks indicate if it was successful or not

Conflicts:
	lib/files/view.php

Added input[type="url"] to styles.css

Cache Test: set datadir to temporary location, otherwise initmountpoints will access to productive location

Cache: mount user mountpoints to make sure that // exists before accessing it. Fixes #2553 and #2374

Fix undefined index for share mount point retrieval

public.php - check if maintenance mode is enabled

Refactor of user management