Optional Settings
==================
There are now optional settings for customizing Google Analytics tracking code.

H5BP_GA_SETDOMAINNAME
---------------------
Set domain for multiple, or cross-domain tracking.

H5BP_GA_SETALLOWLINKER
----------------------
To use _setAllowLinker method on target site for cross-domain tracking. Set to 'True' to enable. Requires H5BP_GA_SETDOMAINNAME to be set.
