#228: added reconfigure plan

- now rest api supports automatically all planAction defined
#225: session timeout now configurable

- use sessionTimeoutInMinutes config token
#227: fixed list when too big
#220: fixed not a boolean: [:] exception
#224: fixed issue when system id provided
#222: fixed issue when role is USER

- workaround for grails bug http://jira.grails.org/browse/GRAILS-10293
#235: fixed IllegalStateException
#236: gluVersion is now "injected" by setup.sh
#236: fixed dev-setup build command

- use post 5.1.0 distribution mechanism
#235: fixed (display) issue when timeout
#238: added json groovy del for system model
#232: optionally use shared class loader for scripts
#237: swapped order rest/zookeeper
#230: Add 'agents' command to the console-cli tool. This will output the agents list with their metadata from the console rest api.
#215: check for pre and post master conf outside
use of gradle 1.7 and gradle plugins 2.2.4
5.2.0: updated release notes and documentation