[BUGFIX] IndexedSearch: Fix various issues in extbase plugin

Fix these bug in the experimental extbase plugin of IndexedSearch:
 * TypoScript does not appear in include_static_file
 * Fatal error because views use variable named differently in
   Controller
 * Pagination does not work because the form is not present on
   resultpage which breaks JavaScript

Change-Id: I55962d07c543a10358298d7e9c8096c18bc0a615
Resolves: #58003
Releases: master
Reviewed-on: http://review.typo3.org/30023
Reviewed-by: Markus Klein <klein.t3@reelworx.at>
Tested-by: Markus Klein <klein.t3@reelworx.at>
Reviewed-by: Cedric Ziel <cedric@cedric-ziel.com>
Reviewed-by: Andreas Fernandez <andreas.fernandez@aspedia.de>
Reviewed-by: Sebastian Schawohl <s.schawohl@magnetic.coop>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>