[!!!][TASK] Rewrite backend modules of indexed_search

 * Move info modules and admin module to a central place
 * Use extbase & fluid
 * Add translations

The old modules are removed with a different commit to make it possible
to compare the output of old and new!

Releases: master
Resolves: #61511
Change-Id: Id750b0ad78e8ab115b917d4772281d3aceca6eee
Reviewed-on: http://review.typo3.org/32708


Reviewed-by: Markus Klein <klein.t3@reelworx.at>
Tested-by: Susanne Moog <typo3@susannemoog.de>
Reviewed-by: Tymoteusz Motylewski <t.motylewski@gmail.com>
Tested-by: Tymoteusz Motylewski <t.motylewski@gmail.com>