Chasing tiles
Overriding createBackBuffer in UTFGrid layer

This layer doesn't need to create a backbuffer.
Test that createBackBuffer doesn't fail
Test clean up
Merge pull request #890 from tschaub/utfgrid-backbuffer

Override createBackBuffer in UTFGrid layer.
iMapPlot Standard Build Scripts
Merge branch 'master' of https://github.com/itbeyond/openlayers