Implemented Remove use of globals

[Gracie]

Globals are used 157 times. This isn't meant as a means regarding security but maybe code optimization.

http://stackoverflow.com/questions/6998974/replacing-the-global-variables-how-and-why

 

[LPH]

I agree @Gracie -- Version 3 will focus on using the XenForo classes and methods as well as clean up the front end in terms of moving code to classes and methods.