Bug 1037235 - toolkit/loader does not check module compatibility
Bug 1037235 - removing a redundant test from test-cuddlefish.js, fixing test-loader.js tests, and enabling the test-unsupported-skip.js test on travis a=me
Merge pull request #1779 from erikvold/1037235v5

Bug 1037235 - toolkit/loader now can opt-in for module compatibility r=jsantell