2.7 release

Second rc

replace freebase with openrefine-wikidata

2.6 rc2 release tag

Fix code signing. Increase Mac disk size

Updated 2.6 beta1 tag

Second alpha for Refine 2.6

First alpha release of 2.6. This is primarily intended for developer …

…testing.

Vocabulary force import

Updated OpenRefine and crowdsourcing extension