Configurable position / PHP improvements

Hey.

As I didn't like to have the outline positioned in the sidebar, so I added a menu item disable the positioning in the sidebar.

![image](https://cloud.githubusercontent.com/assets/4608350/2903887/b7f47190-d5f5-11e3-9ede-bc10463f4a57.png)

Additionally I improved the PHP handling a bit. ('$' and '=' characters are allowed in method signatures)

Maybe you want to use it.

Cheers,
Karsten