[TASK] Clean up phpDoc comments in typo3/sysext/

Clean up phpDoc comments for the following classes:

* typo3/sysext/cms/tslib/content/class.tslib_content_imagetext.php
* typo3/sysext/cms/tslib/content/class.tslib_content_loadregister.php
* typo3/sysext/cms/tslib/content/class.tslib_content_media.php
* typo3/sysext/cms/tslib/content/class.tslib_content_multimedia.php
* typo3/sysext/cms/tslib/content/class.tslib_content_offsettable.php
* typo3/sysext/cms/tslib/content/class.tslib_content_quicktimeobject.php
* typo3/sysext/cms/tslib/content/class.tslib_content_records.php
* typo3/sysext/cms/tslib/content/class.tslib_content_restoreregister.php
* typo3/sysext/cms/tslib/content/
	class.tslib_content_scalablevectorgraphics.php
* typo3/sysext/cms/tslib/content/class.tslib_content_searchresult.php
* typo3/sysext/cms/tslib/content/
	class.tslib_content_shockwaveflashobject.php
* typo3/sysext/cms/tslib/content/class.tslib_content_template.php
* typo3/sysext/cms/tslib/content/class.tslib_content_text.php
* typo3/sysext/cms/tslib/content/class.tslib_content_user.php
* typo3/sysext/cms/tslib/content/class.tslib_content_userinternal.php

Clean up provides:

* Provide correct parameter names in phpDoc
* Provide correct data types in phpDoc
* CGLify phpDoc (remove tabs)

Change-Id: I33fec7cd9ca9a10c760b519db2980b8a667b2830
Resolves: #38061
Releases: 6.0
Reviewed-on: http://review.typo3.org/12073
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn