rename help/Help to HelpPage to follow naming convention
provider page uses Flex architecture to get data
migrate settings page to use Flux pattern
cast providerIdentities to BackboneCollection

resolves warning from Provider component that the provided data meets
the expected type
Create JSX version of instance launch modal
break out launch modal into multiple files

One per React class
move responsibility for fetching sizes into the modal InstanceSizeSelect component
create dedicated Instance Launch Modal.
add missing function to Machine model so it pretty prints the version again
cleanup ProjectStore
Lazy load SizeStore.get
can cancel launch modal
launch button disabled until user gives instance a name
can launch instances

but need to solve the problem where sizeId doesn’t get a default value
refactored launch modal to follow better data flow (less error prone)
launch modal unmounts correctly
modal relaunches correctly
inline spinner displays in instance list

shows immediately after launch but before the server confirms the
launch was successful and returns an ID for the object.  If the launch
fails, the instance should be removed from the list.