Merge pull request #3 from NMML/dev.dsj

Added several things:
ADD style MultiPolygon and LineString features
add ability to turn layers on/off

kernel, lines and points can now be turned on/off via check boxes
sub-sample observed points to 250

this should improve performance for drawing of points layer
make sub-sampling of observed points conditional

must have more than 250 points before sub-sampling the observed points
add conitional text panel re: point sampling

add conditional text panel that notifies user points will be sub-sampled for display only
10% home range bands and colorbrewer colors

changed to finer resolution home range bands (10% intervals). mostly for aesthetics. new colors are from colorbrewer.
Merge pull request #4 from NMML/feature/color_kernels

10% home range bands and colorbrewer colors