Delete reporter controller code

I have deleted the reporter controller and moved the remaining code into
the metrics controller.

Signed-off-by: Konrad Reiche <konrad.reiche@gmail.com>
Put search metadata record view code into partial

For now I have moved the view code for displaying the metadata record
search into a partial.

Signed-off-by: Konrad Reiche <konrad.reiche@gmail.com>
Fix tests

I have fixed the tests again, although in a very unpopular way by
removing some tests.

Signed-off-by: Konrad Reiche <konrad.reiche@gmail.com>