In order to overcome the annoyance of the ArcSDE coverages having to be configured through a URL that contains the user/password information and whose format is quite convoluted, make the ArcSDE extension contribute it's own store edit panel that:
- allows to select an existing arcsde store as prototype for the connection information
- allows to fill out the connection information through separate input fields (like for datastores) instead of a single URL containing all the information
- allows to select the desired raster from a combobox instead of having to write it by hand (and knowing beforehand the table name, as there's currently no way to query the available rasters in the database)
Ideally, a single store should be configured to account for all the rasters in the database, but that's not possible right now due to limitations in the current GeoTools coverage API. This is gonna be worked out when the new coverage API lands to supported space on geotools though and geoserver is updated.