Internationalisation and tool to parse surface forms from Spotlight Index

Properties moved to an external file, including langCode, resourceNamesSpace, in order to work with i18n chapters.

Now run the server with mvn scala:run -Dlauncher=Server -DaddArgs=indexing.properties

The class org.dbpedia.lookup.util.CreateLookupIndex parses the surface form generated by Spotlight Indexer to generate the rdf file needed for Lookup Indexer.
It is called by script createIndexFromSpotlightIndex.sh