Moved geotools-independent generators to io-impl...

... module. Moved AbstractTestCase to io module.
Add WKTGenerator and JTSConvexHull process to...

...wps_config.
Added test jar creation to io-impl-module pom.
Removed wps_config from io-geotools-module.
Adjusted path to config for tests.
Merge branch 'JTS-fix'