[TASK] Add vidi 0.2.0

Compatibility patch for the vidi-caused issue that destroys navigation
to extbase backend modules, through one of its hooks.

There is already a patch pending review for vidi on Gerrit.

Change-Id: I1f92ba5ba246e780326871d05618d1c3263687e2
[TASK] Correct emconf comments

Change-Id: Id1860b933721aaaa5660680895ada606d29c5171
[TASK] Make PackageManager load compat6 last

PackageManager decides loading order on dependencies. Some fixes depend
on compat6 being loaded last, but normally, we cant achieve this without
setting dependencies, which defeats the purpose of having the ability to
choose your fixes.

So we inject our own DependencyResolver instead.

Change-Id: Ia450f539da9e6c16330b6e7c43789465aa4d6665
[TASK] Mention vidi in README

Change-Id: I5539466e2ae5cbb4e4e65156c36320a622ce5cc5
[TASK] Fix description

Change-Id: Idd83c0e6c57e7a9081180711452582791e3fd491