Rather than using relative paths for css imports - which can break when
we move files around - add our styles path to the webpack sass-loader
loader using the `includePaths` setting.
This fixes an issue where the payment form - initiated from an external
request payment link - would display under the connect dialog if that was
already open. This change ensures that the payment form always displays
on the top most layer.
Fix#284
Jack Mallers
Tom Kirkpatrick
dfat