Update LocalSettings.php

Changed the LocalSettings.php file to include the Mantle extension. Mediawiki  > 1.23 requires this extensions in order to run the abstract extraction. The abstract extraction guide has also been updated to reflect this.
WikidataFactsExtractor is ready
geolocation seperated to another file
Removed unnecessary ontology properties
commonMediaFilesProperties defined outside ouf extract method.
WikidataMappedFactsExtractor 1 to 1 replace case

CommonMediaFiles variable outside of extractor

Some identation changed
Merge pull request #267 from alismayilov/wikidatafacts

WikidataFactsExtractor
Merge pull request #268 from alismayilov/wikidatamappedfacts

WikidataMappedFactsExtractor 1 to 1 replace case
Merge remote-tracking branch 'upstream/master' into live_features