"Globalize" the Persist and IsAllowed functions

[wyozi]

wmcp creates a global table at https://github.com/wyozi/wmc-plus/blob/master/lua/autorun/wmcplus.lua#L1

You could use that instead of the prefix namespacing.

[yupi2]

Ah, I forgot about the table there. I didn't like the idea of creating the table for only two functions.