Remove unneccessary files
Feedback filter by author, better list display

Also removed the site field, which is why the DB is uploaded as well
Add date to Feedback, add Filter by Task
Auf Feedback-Mails per Klick antworten

Zeigt nun eine klickbare URL, mit vorgefertigter Antwort-Mail
Added field to mark feedback as answered
Merge pull request #22 from cknoll/feedback-filter

Expanded Feedback abilities