GEOMESA-153 Remove class cast exception

* Avoids a class cast exception in a test.
GEOMESA-146 WPS import process for performance

* Implements a bulk WPS import process.
Fixing up attribute indexing and making tests pass for now
Merge branch 'accumulo1.5.x/1.x' into 2ndaryindex
Working on reverse index
working on shards
working on index
fancying it up
Some fixes