Finished re-write of java to scala. Integrated AuthorEmailTaggingFilter
and a scala pipeline to run scala based filters
New pipeline code and AuthorEmailTaggingFilter
Merge branch 'master' of github.com:iesl/rexa1-metatagger
 Fixed conflicts.
Conflicts:
	src/main/scala/org/rexo/ui/MetaTag.scala
Tweaked to include the new scala version of MetaTag, which runs in scala
Changeed to run the scala version by default
New AuthorEmailTaggingFilter, which is now integrated into the scala
part of MetaTag