3577999 : Extend Namespaces enum with common prefixes

common prefixes are virtually never changed or assigned in any other way, without making them mandatory

add inUse boolean parameter to Namespaces to avoid legacy namespaces
GITHUB-10 : Remove dependency on OpenRDF Sesame
GITHUB-10 : Add isBuiltIn
GITHUB-10 : Apparently Java doesn't like that style
Merge pull request #27 from ansell/GITHUB-10

3577999 : Extend Namespaces enum with common prefixes
Added .idea to .gitignore
Changed getBaseIRI to getPrefixIRI

Changed getBaseIRI to getPrefixIRI to be more inline with the OWL 2
spec.  See Table 2 in the spec.
GITHUB-10 : Add RDFa Core Initial Context prefixes
GITHUB-29 : Add profile IRIs
Merge pull request #30 from ansell/GITHUB-29

GITHUB-29 : Add profile IRIs
Merge pull request #28 from ansell/GITHUB-10

Added RDFa Core Initial Context prefixes and other well known prefixes and prefix names.
Added more well known namespaces, removed non-explanatory comments
Tidying of javadoc
Added enum for status and use
added javadoc generation
trying to get the assembly to work as expected
minor fixes about use of IRI.toString()
removed javadoc warnings in maven builds
mvn install and mvn deploy now make aggregate sources available.
@Deprecated replaced with @deprecated