Set overwritewebroot when installing owncloud to avoid problems

Fix #10514
Refresh if maintenance mode is over

Using status.php for this.
I modified status.php to also show, whether we're in maintenance.

Checks every 20 seconds if maintenance is over, if yes: reload.
This fixes the double scrollbars issue
repair search lucene before installing
Merge pull request #10929 from owncloud/issue/10514

Set overwritewebroot when installing owncloud to avoid problems
requesttoken has now a length of 30 chars
Fix method name
Merge pull request #10990 from owncloud/fix-testCallRegister-master

requesttoken has now a length of 30 chars
Create .user.ini for PHP-FPM

PHP-FPM can't read .htaccess PHP settings unless a PECL extension is installed.
From version 5.3+ of PHP, settings can be set in .user.ini files

This is a .user.ini file mirroring what is included in the .htaccess file
TODO: Update the documentation if there are sections documenting how to change some PHP limits
Merge pull request #10988 from owncloud/usetransactions-wrong-name

Fix method name useTransactions
Load apps in test situations
Fix mkdir error in mountconfig.php
Fix contructor in test
Merge pull request #10992 from oparoz/patch-3

Create .user.ini for PHP-FPM
[tx-robot] updated from transifex
Merge pull request #9698 from owncloud/fix-9666

Load apps in tests, fixes #9666
Add custom hex2bin implementation for 5.3

Fixes https://github.com/owncloud/core/issues/11004
Merge pull request #10962 from owncloud/repair_search_lucene

repair search lucene before installing
Add X-UA-Compatible to all templates

Replaces https://github.com/owncloud/core/pull/10850
Merge pull request #3937 from owncloud/refresh_if_maintenance_is_over

Refresh if maintenance mode is over