Only reset end time for jobs that have started at least once
Prevent erroneous task state log lines involving migration
implement strict ranges (from,to) as opposed to simple prefixes
super useful for things like geo-fencing and probably many other things

Conflicts:
	hydra-data/src/main/java/com/addthis/hydra/data/tree/DataTreeNode.java
Merge pull request #6 from stewartoallen/4pull-query-range-ext

implement strict ranges (from,to) as opposed to simple prefixes
changes to URLTree to deal with urls that have trailing slashes
Merge branch 'master' of https://github.com/addthis/hydra

Conflicts:
	hydra-data/src/main/java/com/addthis/hydra/data/tree/DataTreeNode.java
fix merge conflict comment