Process path fix for raster layer loading
Merge pull request #568 from lossyrob/fix/loadtileset

Process path fix for raster layer loading
Added SRS transformations to geotrellis.util.srs

-Added two Spatial Reference Systems (SRS), Web Mercator and Lat Long, and the transformations between them.
-Removed geotools dependency from geotrellis-server, the only thing being used for this was the reprojection capabilities of geotools. (Closes #567)

NOTE: Anything using the geotrellis.admin.Reproject object will now need to use the new method.
Remove geotrellis.admin.Reproject
Replaced catalog comment in reference.conf
Added ejc123 to contributors list.
Publish docs and sources in publish task
Merge pull request #570 from lossyrob/publishdocs

Publish docs and sources in publish task
Add initial classes and traits for data sources.

This checkin also moves FilterGeometry to its own file.
Merging initial implementation of raster sources.
RasterBuilders now use RasterDefinition and ops.
Remove setDataDefinition from SourceBuilder.

Also, separate some classes into separate files; add some tests that
should have been checked in.
Integrate RasterDefinitions into builders.
RasterLayer now includes tile information.
Implement LocalRasterSource and DistributedRasterSource.
Initial support for execution of DataSources.

Debugging statements are still included.
Tests updated for current status.
Add LoadRasterSource and LoadTile operations.
Update tests to check result values.
Remove debug statements.