Follow up GeoTools changes and add basic support for structured coverage grid readers
[GEOS-5875] Expose and allow manipulation of structured coverage grid readers via rest api, and [GEOS-5853] Allow creation of a image mosaic by uploading a zip file with the necessary data and config files
Several WCS 2.0 improvements
The wcs 2.0 EO and web wcs 2.0 EO modules
Documentation for the REST API extensions
Merge pull request #264 from aaime/structured

Follow up geotools structured grid covearge readers