Update package.json to use latest Karma version and Jasmine 2.0.  Add tests for faModifier.

With the recent changes to faModifier's source, the tests for faModifier are obsolete.  So this PR is mainly for the Jasmine 2.0 update.

For whatever reason, the update to karma's jasmine adapter broke the proper loading of the famous modules before the loading of famous-angular.js, so I needed to add the global `$famousModulesDeclared` event back into the callback for the `$famous` provider declaration, in order to delay Karma from starting.