Fix license header script and update headers

[ChristophWurst]

This hasn't been done in a while. Thus the large diff.

[skjnldsv]

Should we have a test for it? :p
And a bot?

[rullzer]

No bot.
We should just remember to run it once before a release or something.

[skjnldsv]

There was some weird changes, like this one

server/apps/settings/lib/Controller/UsersController.php

Lines 1 to 40 in 5bf3d1b

	<?php
	/**
	* @copyright Copyright (c) 2016, ownCloud, Inc.
	*
	* @author Arthur Schiwon <blizzz@arthur-schiwon.de>
	* @author Bjoern Schiessle <bjoern@schiessle.org>
	* @author Christoph Wurst <christoph@winzerhof-wurst.at>
	* @author John Molakvoæ (skjnldsv) <skjnldsv@protonmail.com>
	* @author Roeland Jago Douma <roeland@famdouma.nl>
	*
	* @license AGPL-3.0
	*
	* This code is free software: you can redistribute it and/or modify
	* it under the terms of the GNU Affero General Public License, version 3,
	* as published by the Free Software Foundation.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU Affero General Public License for more details.
	*
	* You should have received a copy of the GNU Affero General Public License, version 3,
	* along with this program. If not, see <http://www.gnu.org/licenses/>
	*
	*/
	// FIXME: disabled for now to be able to inject IGroupManager and also use
	// getSubAdmin()
	//declare(strict_types=1);
	/**
	* @copyright Copyright (c) 2016, ownCloud, Inc.
	*
	* @author Arthur Schiwon <blizzz@arthur-schiwon.de>
	* @author Bjoern Schiessle <bjoern@schiessle.org>
	* @author Björn Schießle <bjoern@schiessle.org>
	* @author Christoph Wurst <christoph@owncloud.com>
	* @author Clark Tomlinson <fallen013@gmail.com>
	* @author Joas Schilling <coding@schilljs.com>
	* @author Lukas Reschke <lukas@statuscode.ch>
	* @author Morris Jobke <hey@morrisjobke.de>
	* @author Robin Appelman <robin@icewind.nl>

[kesselb]

There was some weird changes, like this one

😨

grep -c -r --include \*.php  "is free software: you can redistribute it and\/or modify" . | grep -v -E ':0|:1'
./build/license.php:3
./apps/settings/lib/Controller/UsersController.php:2
./apps/settings/lib/Controller/ChangePasswordController.php:2
./apps/text/lib/Controller/DirectSessionController.php:2
./apps/text/lib/Controller/WorkspaceController.php:2
./apps/recommendations/lib/Service/RecentlyCommentedFilesSource.php:2

Seems to affect only a few files.

[kesselb]

@ChristophWurst could you have a look at the broken files?