LocalTapiola: HTTP status code manipluation & java stack trace

##Issue

The reporter found a minor technical issue where an error-application could be used to make the server generate arbitrary error codes. In addition, low impact text injections with no links nor active content could be generated.

##Fix

A fix was issued for the application which prohibited the reported behavior.

##Reasoning

The report did not reveal any serious issues, but it was still decided it warranted a fix.