Make tests for project state-related higher order components

[benjiwheeler]

project-fetcher-hoc:

• Check that it calls onFetchedProjectData with projectData

vm-manager-hoc:

• Mock vm’s load project function, test that it’s called
• test that it then calls project-state reducer's onLoadedProject()
• If it’s called with no data, doesn’t render anything/renders null
• Test that vm is initialized (use a mock for vm)