[TASK] Streamline usage of PageRenderer

The PageRenderer is a Singleton and only one instance exists during
runtime. This patch cleans up the usage and prevents sharing the
PageRenderer object over public getters. This helps to improve the api
and get rid of unnecessary functions.

Releases: master
Resolves: #68074
Change-Id: I66abd565df96ff0b8fb31d24a04721ca8ecb3f3a
Reviewed-on: http://review.typo3.org/41131


Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Benjamin Mack <benni@typo3.org>
Tested-by: Benjamin Mack <benni@typo3.org>