removed hard coded version
Removed OPS refrences and easier to extend.
Maded methods public to allow then to be used in IMS
Removed some error throwing and renamed a method
Transative finder (builds but buggy)
Fixed transative finder.
changed permissions to allow extending
Added LinkedChemistry to chembl13 id
Merge branch 'master' into develop

Ddeleted dead file:
	org.bridgedb.uri.sql/src/org/bridgedb/url/UriSpaceMapper.java
Merge branch 'develop' into Christian
Now uses OpenRDF TurtleWriter
opened up variables to extend
relaxed access to allow overwriting
Added mappingSource to toString