Add-ons [DigitalPoint] Better Google Analytics 1.1.2.2

• Require XF 2.2 or higher (incompatible Mailer class between XF 2.1 and 2.2)
• Use <xf:fa /> for the staffBar now that XF requirement is 2.2+ (better compatibility with Font Awesome Manager)

If you aren't using Font Awesome Manager, nothing really changes with this update (if you were using XF 2.0 or 2.1, you would have gotten errors before, now it simply doesn't let you install unless you have XF 2.2).

• Google Analytics changed what dimensions are compatible and no longer allow full page URL to be used in conjunction with most other dimensions/metrics. Because of that, we are switching to something that works reasonably well as far as compatibility in reporting (page path).

• Some template modification changes to work better with third-party styles
• Removed ability for purchase revenue chart to be broken down by item name (no longer allowed with Google Analytics API)