* cleanup bad chars from tags in harvester
* cleanup bad chars from tags in harvester - do safer config read
* use munge_tag to clear tags, code cleanup
* restored default tag truncate
* tests for clean tags
* removed hack for IHarvester.info()
* #188 cleanup
* #188#190 Add doc about harvester JSON config
* clean tags tests updated #188
* #188 test fixes
* #188 test fixes
* #188 test fixes
* #188 test fixes
* removed unused/bad code after review #188