rework geoserver configuration:-geoserver context is set to 'geoserver' by default, but can be reconfigured-data directory is set in the geoserver web.xml file (we have a template, set the value accordingly, then overwrite the deployed version in the geoserver webapp)...
changed improper use of getFS() to a /. getFS() should never be used with a URL since it will return \ on windows which is not a valid separator in a URL.
Change location of PropertyService to properties directory
Create database and shared directories for database management code and shared code respectively.
Beef up exception handling from file utilities. Move UtilException to MetacatUtilException to eliminate conflict with similar exception in utility package.
Intial addition of geoserver utility file