Added non-linear frontiers
Improved map display with province borders
Merge branch 'master' into non_linear_frontiers
Merge branch 'master' into non_linear_frontiers
Changed province selection mark

Polygon mark was unappealing with the non-linear frontiers below
Fixed a js bug when deselecting a province
Merge branch 'non_linear_frontiers'
Fixed js dependencies + minify js and css
Added treasury display
Improved map selection cursor