Baobab not loading

[guybedford]

From https://github.com/systemjs/systemjs/issues/425.

Circular references: helpers -> type -> facet -> type helpers -> type -> facet -> cursor -> helpers

Debugging steps:

• Do all of the above modules correct detect the require() statement dependencies as deps in the load records.
• If so, investigate execution order to see why it is not executing as expected.

[guybedford]

Moved to https://github.com/systemjs/systemjs/issues/426.