Add CSS Require Plugin.

Move default styles to local css files.
Fixed click issue in IChoropleth.
Give markers unique IDs.

Signed-off-by: Gordon Smith <gordon.smith@lexisnexis.com>

Conflicts:
	widgets/src/chart/Pie.js
Helvetica Neue isn't a websafe font, so on most comptuers it will default to just Helvetica.