initial support for mosaics with time
added more mosaic time support, ability to create and modify via rest api
Added support for uploading zip file directly to /files endpoint for directories/mosaics
fixing timestamp assertion
Support for auto configuring time for mosiac.

- refactored date parsing out of DateFormatTransform into a general utility class
- added automatic mode to mosaic to determine timestamps automagically
not caching SimpleDateFormat not thread safe
Added message to ImportData to support reporting back error messages
setting message on Granule when date time parsing fails, refactored TimeMode to be more permgen friendly
no DimensionInfo.setUnits on 2.2.x