Revert "Merge branch 'develop' into rav/karma"

The karma tests don't pass yet, and aren't ready to land on develop.

This reverts commit 438453e61a, reversing
changes made to 50f94eb040.

test/all-tests.js

@@ -1,7 +0,0 @@
-// all-tests.js
-//
-// Our master test file: uses the webpack require API to find our test files
-// and run them
-
-var context = require.context('./app-tests', true, /\.jsx?$/);
-context.keys().forEach(context);