Fixed directory name typo
Added support for drawing heatmaps at any scale - dynamic resolution
change of data point interpolation.

web.xml reference added for directory name refactor
Added four view states, where based on zoom levels the heatmap
interpolation exhibits time saving behaviours. Added binning of data
points at farthest out zoom levels. Fixed a bug in point weight
calculations.
Fixed error where missing data would add interpolated values of maximum
weight to the heatmap. Distant real data points will now contribute
scaled down weighting to interpolated value.
Fixed view tearing when binning.