.gitignore
Better error report for apachectl process execution
Improve error reporting
InitialContentMoveHack replaces Activator, which would fail depending on startup timing
Use an arbitrary command for graceful restart of the HTTP front-end.
Requires a new ModProxyConfigTransitioner config, and the
sling.devops.httpd config parameter is not used anymore.

With this change, the apachectl stop command is not used anymore,
so the front-end is not stopped when the orchestrator starts or
stops, which is IMO the correct behavior.
Remove non-required bundles for faster startup
re-add httpd start and stop commands, disabled due to crankstart config limitation
variable number of instances
without discovery, multiple minions don't start reliably
Updated crank files.
Updated vagrant-based scenario.

Vagrant-based scenario now configures only one machine that has the necessary elements for running the scenario: ZooKeeper, MongoDB, properly configured Apache Server, and a Git repository to be monitored by the Orchestrator. It doesn't automatically crankstart the Orchestrator or the Minions now, only prepares a ready environment.