Fix for a Server Setup issue. 

Signed-off-by: Dhananjay Nakrani <dhananjaynakrani@gmail.com>

Currently for error-reporting-server to work properly, we need to make `DocumentRoot` to point to `app/webroot` directory. And with modifications in `DocumentRoot`, it is not possible to run other applications (say for example phpMyAdmin) along side error-reporting-server.

With this changes error-reporting-server can be set up in any sub directory of DocumentRoot. And hence more than one applications can be hosted on the same apache server.