We use the cache clear hook to index pages whenever the cache was
cleared.
This makes it possible to cover some cases like changing content on a
page. But also if an integrator configures to clear additional pages.
This is limited as we can not handle cache tags at the moment.
Resolves: #131
* Add typoscript option which TYPO3 tables should be processed and which
should not be processed.
* Respect new optiion in hook.
* Also add necessary tests.
* Remove old no longer needed tests for hook.