[BUGFIX] Relations to the same table in Extbase

This patch introduces a mapping for properties to table aliases in
the Extbase Typo3DbQueryParser. This allows relations between
identical classes / tables.

Releases: master, 6.2
Resolves: #27057
Change-Id: If1e88c994b8a1179f6babf2bdfc1da3e61b2c658
[FEATURE] Improve Backend live search

When the user searches for a page he is now redirected to the
page module instead of the list module and he can edit contents
instead of editing the page properties.

Change-Id: Ia50070629fbd9f87cb2c6896a52f8b4f61ac8a25