UniversalLinks requires both concepts and wikitext parsing.
Important changes:
- All loaders move to package org.wikibrain.loader
- PipelineLoader now is org.wikibrain.loader.pipeline.Main
Moved Main to new top-level wikibrain package
Merge remote-tracking branch 'remotes/origin/master' into maxima-survey

Conflicts:
	wikibrain-core/src/main/resources/reference.conf