Speed up map rendering

[slaweet]

Rendering maps is currently slow (on low-spec mobile it can take several minutes). Just load any page (e.g. [0]) and run profiler in browser developer tools.

There is an unnecessary step when Kartograph.js [1] converts the svg paths from string to array of points and back to strings. Maybe use of Kartograph.js can be avoided and use only RaphaelJS [2], which is currently called by Kartograph.js anyway. RaphaelJS only is used in anatom.cz.

[0] http://slepemapy.cz/practice/world/state
[1] http://kartograph.org/docs/kartograph.js/
[2] https://github.com/DmitryBaranovskiy/raphael