GEOMESA-155 fix accumulo1.4

this is the accumulo1.4 branch fix for geomesa-155, made attributeNameLookUp synchronized
GEOMESA-154 Remove commented out code present in MockAccumuloSource in IteratorTriggerTest
GEOMESA-172 adding try around decoding simple features
GEOMESA-139 Remove inconsistent naming of temporal and geometry attributes in index

Standardize on using geom/dtg for index attributes:
geomesa_index_geometry   --> geom
geomesa_index_start_time --> dtg
and
geomesa_index_end_time   --> dtg_end_time
GEOMESA-170 - Two query corner cases

* Addressed degenerate intersections in the Geometry utils.
* Properly handles intervals in FilterToAccumulo.
GEOMESA-150 On ingest, decomposition of multipoint geometry spanning anti-meridian should result in an equivalent MultiPolygon containing no polygons that span the anti-meridian

use spatial4j to deduce International Date Line spanning geometries
GEOMESA-121 Rewrite input filters with ORs at top.

* Implemented rewriting arbitrary filters in Disjunctive Normal Form.
  This means that any ORs have been 'bubbled up', and any NOTs have been 'pushed down'.

  The resulting filter tree has at most one OR at the very top.
  Additionally, each child of that OR is an AND or a base filter.

* Implemented property-based tests for the filter rewriting functionality using ScalaCheck.

Of note:  A clear optimization is that attribute filters need not be split up or otherwise mangled.
This issue is as https://geomesa.atlassian.net/browse/GEOMESA-171

* Refactored some of the test code to pull data generation.
GEOMESA-161 IDL query fixes

queries now support IDL spanning geoms (except for dwithin), with minor format fixes
GEOMESA-164 Add GeoMesa Pages to GeoServer

* Adds Accumulo stats, HDFS stats and config.
* Implements ability to  initiate M/R jobs.
GEOMESA-173 Extract avro features into its own subproject

Moved AvroSimpleFeature into its own subproject.  Implemented
AvroSimpleFeatureFactory to create AvroSimpleFeatures when
using SimpleFeatureBuilder.