draft core refactoring for wikidata
fixed type conflicts
added wikiPageExtractor trait to match extractors that accepts WikiPage
various changes
Merge pull request #3 from jimkont/wikidata

various changes
added wikipage extractor
various changes by dimitris
changed updated ArticlePageExtractor in prop file
fixed issues in Sever Module to deal with Parser -> Option
fixed bugs in server module due to chainging Extractor[PageNode] to Extractor[WikiPage]
import scala.language.reflectiveCalls
adapt for the new parser output
remove obsolete classes
throw exception on parsing error
merge with latest master
skipped HomepageExtractor test on merge
comment unneeded constants (todo: remove all & reuse Namespace class)
Adapt Live core to work with the refactored framework
Merge pull request #4 from jimkont/wikidata

final Live merge
rename Extractor with a more representative name