Fix status icon styling for external storages

Make Cache\Updater per storage

Remove unused internal methods

* removes OC_Helper::mb_substr_replace and OC_Helper::mb_str_replace
* keeps public interface wrapper working as expected

Adding sync support - including dav tests

Add Ctrl+F shortcut for the search bar

Dont output paths in scan.php

add icon for Federation app

Replace shitty netcat use with dedicated PHP script

[3rdparty] Bump symfony/event-dispatcher to 2.7.7

fix details on redirect and update page

[Sharing 2.0] Add a new db column for the file owner

[Sharing 2.0] di fixes

Fix overriding function from 3rdparty warning

We need to store the owner of a file in the db to do efficient queries
on the owner of a file. Without this we need to construct fill paths for
each file id in the table and see who the owner of a file is. Which does
not scale.

Take submount etag into account for folder etags

[3rdparty] Bump symfony/process to 2.7.7

[3rdparty] Bump symfony/routing

sabre/dav 3.0 and related

auto-add ownClouds to the list of trusted servers

Fix RHDS ldap paged search, Issue #17173

Avoid double slashes in URL when trying to add an remote share

Improvements to external storages list rendering