Initial project setup for Avalara Taxation provider
Formatting code.  Starts to Avalara taxation plugin
Merge branch '1.3.0' into 1.3.0-avalara

Conflicts:
	src/Merchello.Core/Gateways/GatewayProviderBase.cs
Bumps minor version.  1.2.X versions will not be publically released, but are intended to serve as testing versions as we build out a couple of sites.  Binaries will be available on MyGet.

Exposes the static customer pages in the back office.