upped dependencies and created version 1.4.1-SNAPSHOT

clojure -> 1.5.0
clj-http -> 0.6.5
log4j -> 1.2.17
mongo-java-driver -> 2.10.1
httpclient -> 4.2.3
commons-configuration -> 1.8
cheshire -> 5.0.2
Merge branch '1.8' of https://github.com/iPlantCollaborativeOpenSource/iplant-clojure-commons into 1.8