make the location of the ue_quicklaunch_template folder configurable

[ScottKirvan]

This would be nice for anyone that wants to keep the template files out on a shared drive - maybe for like a studio environment or something.

Implementation would need some kind of config manager (or at least he ability to parse some config file), so personally, this is getting a little beyond the scope of what I need or want to get into. Anyone else is welcome to have at it. Could be handled with a small config app or maybe even with some modifiable options in the installer.