CORE-3929: switched from clojure.data.json to cheshire
Update project.clj

clojure -> 1.5.0
tools.logging -> 0.2.6
cheshire -> 5.0.2
congomongo -> 0.4.1
compojure -> 1.1.5
ring-jetty-adapter -> 1.1.0
swank-clojure -> 1.4.5
clojure-commons -> 1.4.1-SNAPSHOT
httpcore -> 4.2.3
httpclient -> 4.2.3
upped dependencies and increased version

log4j -> 1.2.17
slingshot -> 0.10.3
fixed dependency update errors

swank-clojure -> 1.4.3
lein-iplant-rpm -> 1.4.1-SNAPSHOT
clojure 1.5.1