Wikidata should depend on the concept mapping
Fixed performance bug in MetaInfoSqlDao
Fixed tableExists method / fixed MetaInfoSqlDao
Took out one for loop on tableExists method.
Various fixes for pipeline dependencies.
Fixed two bugs: WikidataDao closed cursor, PostGIS missing an index.
Performance optimizations for spatial / local page
Tweaks for Pipeline. Added SR and Spatial to available stages.
Merged with master. Untested, though...
Merge remote-tracking branch 'origin/maxima-survey' into maxima-survey

Conflicts:
	wikibrain-core/src/main/java/org/wikibrain/core/dao/sql/LocalPageSqlDao.java
	wikibrain-core/src/main/resources/reference.conf
Merged with master. Untested, though...