Add scalaxy optimized loop benchmark.
Move jetty service to server subproject.
Increased Unit Test coverage against local operations.

- Fixed some bugs.
- Moving tests out of int.scala to their proper place.
- Made Double versions of the covered operations if they needed it.
Clean up whitespace.
Clarify task descriptions.
Add option for output raster data type (including bit).
Add isTiled() method for run-time test if a raster is tiled.

At the moment, we rely on a run-time pattern match on a raster's
data to determine if a raster's underlying data is tiled or not.

The isTiled() method allows us to do that without reflection.
Use isTiled instead of pattern matching on RasterData type.
Use isTiled() isntead of pattern matching on type.
Merge pull request #388 from joshmarcus/topic/scalaxy_benchmark

Add scalaxy optimized loop benchmark.
Merge pull request #387 from joshmarcus/topic/server_subproject

Move jetty service to server subproject.
Merge pull request #392 from joshmarcus/topic/is_tiled

Add isTiled() method for run-time test if a raster is tiled.
Merge pull request #391 from joshmarcus/topic/add_type_opt_to_task

Add task option for specifying output raster type.
Merge pull request #390 from lossyrob/test/coverage-increase

Increased Unit Test coverage against local operations.
Remove deprecated tiled operations.

Histogram, Max, and Min have been in geotrellis.statistics.op.stat for some
time and should be used instead of these operations.
Update test to use current stat operations.
Update Min to use new Reducer abstract class.
Replace logic.Reducer1 with logic.TileReducer1.

logic.Reducer1 is an earlier implementation of an abstract base class
for operations that can apply map/reduce style operations on tiled rasters.

It is replaced with TileReducer1, which is similar to ThoroughputLimitedReducer1.
Moving forward, we should remove both Reducer1 and ThoroughputLimitedReducer1,
as well as implement TileReducerN operations, but that isn't included in this
commit.
Update benchmarks to use current tiled stat operations.
Added Downsample operation.