statsd.upstart: exec to remove parent shell from process list

Changes ps output from:

1234 _statsd sh
1235 _statsd \_ statsd /etc/statsd/localConfig.js

to just one second line without intermediate shell process waiting for node.
Merge pull request #429 from temoto/patch-1

statsd.upstart: exec to remove parent shell from process list
Use jshint graphite_test.js
Use jshint in graphite delete counters tests
Use jshint in graphite legacy tests
Use jshint in graphite legacy tests statsprefix
Use jshint in graphite tests statsprefix
Use jshint in graphite tests statssuffix
Use jshint in helpers tests
Use jshint in mgmt console tests
Use jshint in process metrics tests
Use jshint in progess mgmt test
Use jshint in set tests
Use jshint in strict mode