Add Oracle Spatial datasource. Code from PostgresDatasource has been moved to AbstractHibernateFullDBDatasource in order to reuse it from OracleDatasource. ojdbc6.jar included as maven dependency (system scope); useful for eclipse:eclipse, but not for packaging the war file
Comment out wml submodule dependency. Add gitignore for target & eclipse files.
Show a meaninful message when an error occurs while executing SQL instructions.
Throw InvalidSridException instead of RuntimeException in SamplingFeature.
Fix for bug 926 - 500 Internal server error when sending a SOAP GetCapabilities request with invalid service parameter value.
Problem: Collection.max was executed on an empty list.

git-svn-id: https://svn.52north.org/svn/swe/main/SOS/Service/branches/52n-sos-400-refactored@20899 9b2695e2-e135-4693-8c03-170fd80ef316
Change pom.xml to use ojdbc6.jar from local Maven repo instead of system scope.
Support test data for Oracle datasource. Fix problem with deferred_segment_creation in Oracle 11g.
Merge branch 'master' into oracle

Conflicts:
	hibernate/datasource/postgres/src/main/java/org/n52/sos/ds/datasource/PostgresDatasource.java