set auto detection flag in RetroRig's resolution dialog

I have moved the setResolution script in the script folder, created a new folder for RetroRig's configuartion files, installed a new copy function in the helpers module and have linked ~/RetroRig into ~/.retrorig. The latter I will need to find the setResolution script from within XBMC. 

I've tested the code. Looks pretty OK. One odd thing I noticed is that the first line of the configuration file was missing after a fresh install and when choosing "Auto Detect" in the resolution setup menu. This is strange, because if I copy the config file manually to ~/.retrorig and call RetroRig's resolution menu again with "auto detect" it works fine. But we don't need this line anyway at the moment :-DD