1. Remapped -fulluninstall to -funinstall
2. Updated behavior so db is not loaded if agent-installer is invoked
3. Renamed Windows Uninstaller from MeshCentralAgent to Mesh Agent for consistency
4. Update service-manager.installService(), such that if the service is the mesh agent, the windows uninstaller will invoke -fulluninstall
5. Updated agent-installer so that secondary agent and its scheduled tasks will be deleted on uninstall
6. Updated event-emitter, so if process.exit() is called on an emit(), it won't throw a catchable exception