XD-217 Add config dir to classpath 

Support custom properties files for the properties-location
attribute of transform, filter, script modules
INT-219 suppress WARNING messages in local mode
INT-219 fixed RedisChannelRegistryTests, null channel handlers no longer tracked for clean up
XD-220 added config/twitter.properties
xd-216: tap stream.module syntax
Add cleanDist task to delete $rootDir/dist before running distXD
Merge pull request #66 from markfisher/XD-220

XD-220 added config/twitter.properties
minor typo: placecholder
Merge pull request #64 from aclement/newtap

xd-216: tap stream.module syntax
configured contain for fast uuids
XD-221: Rewrote all link:document#anchor[Label] to xrefs