GEOMESA-338,266 Scalding Ingest and Date Time fix

* fixed date time cut issue
* added scalding map reduce ingest for csv/tsv data
* allow for ingest without datetime column/information
* skip header is no longer supported
* added java default time zone flag to ingest command in bash script
* improved error logging messages
* fixed milliseconds epoch
GEOMESA-349, 324 Create TAR-ball for distributing GeoMesa & GeoMesa tools' script should be filtered resource

Added a new module, geomesa-assemble, to take care of assembling GeoMesa into a tarball.
Also added symlinks in an Ant job for each library to handle different versions for the future.