[TASK] Adjustments to fit refactored TYPO3CR
[BUGFIX] Captions and other irrelevant text rendered in post index

This addresses the issue that "Enter Caption Here" and other non relevant
text was rendered in the blog post index. The PostController now uses a
filter which only considers Neos.NodeTypes:Text nodes for teaser content.
[TASK] Adjust TypoScript to new protected context in Eel

see http://forge.typo3.org/issues/49982