6937: RunAllTests.py skips some tests

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/branches/maintenance/gramps34@22722 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
6935: stale test code for code long gone

remove stale imports

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/branches/maintenance/gramps34@22723 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
6938: sys.path broken in unit tests under test/

While at it, also fixed GtkHandler_Test -
changed
-        gtk.main()
+        while gtk.events_pending():
+            gtk.main_iteration()
so that the test isn't stuck when done.

Note that this test currently is marked as failed
as its purpose is to pop up an error dialog.

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/branches/maintenance/gramps34@22724 4ae1f11a-8b86-4847-b8af-ab372f36d1fd