Merge pull request #334 from tzz/feature/newrelic

newrelic: new sketch
apache: rewrite from webserver_install
Merge pull request #333 from tzz/master

webserver install sketch
package verify is run before package add, causes always error when package is not (yet) installed. aptitude does not return error on non-existant package, use apt-get instead.
newrelic: minor fixes
newrelic: add ensure/stop and install/uninstall; rename restarted to running in return data; add handles and activation IDs