chrome_plugin to trace mouseover in the webpage

Signed-off-by: algoinfo<windnetv@sina.com>
add context menu
---<windnetv@sina.com>---
add context menu
Signed-off-by: algoinfo
---<windnetv@sina.com>---
setDataset

algoinfo
<windnetv@sina.com>
algoinfo
<windnetv@sina.com>
Added test in order to measure performance improvements
Performance improvement for the rendering process
adaptions in setDataSet for faster redraw in realtime heatmaps
Fixed GMaps data loading issue, added legend support
initial version of leaflet heatmap (pre alpha)
small fixes
new approach: draw per tile, not the whole image at once
Attribution
cleanup in tile size calculation
Modified demo to fullscreen map
Corrected small bug on pushData()
Merge pull request #1 from ffleandro/leaflet

Small bug correction
formatting and shortcuts
Finally a tile based implementation that is way faster (but has some bugs)
bulk import into heatmap (changes appearance)