add auto index create settings (and validation)
minor refactoring
minor formatting update
initial draft for pig schema writer
fix critical bug in BytesArray

an improper initialization caused the data to be offset
add schema writer for pig
fix bug in detecting the index vs type
improve mapping creation (by considering the index as well)
improve Initialization utils mapping
add schema generation to ESStorage

fix ResourceSchema/job conf dependencies
improve code execution in methods called multiple times
push current wip
remove schema generation in favor of better time (iso) format
improve parsing of Field maps (based on REST responses)
add integration tests for parsing
make WritableValueReader more pluggable
propagate schema mapping through shard info

unfortunately seems that an input/output format cannot update a
configuration before the job is dispatched
in case of IO, the information is propagated/broadcasted through the IS
update hive tests
improve hive value reader when dealing w/ nested dates