closes#6018
- added keyForAttribute method in application serializer
- override keyForAttribute in settings serializer to not apply camelCase/underscore conversion
- rename under_scored properties to camelCased
no issue
- add ember-suave dependency
- upgrade grunt-jscs dependency
- add a new .jscsrc for the client's tests directory that extends from client's base .jscsrc
- separate client tests in Gruntfile jscs task so they pick up the test's .jscsrc
- standardize es6 usage across client
no issue
- increases the timeout because acceptance tests sometimes hit the limit which then caused a knock-on effect through other tests
- fix settings/navigation acceptance tests where it picked up previous test failure error messages
- fix user model unit tests so that `expect` is always called _after_ the runloop has finished handling property updates
no issue
- standardize on "{TestType}: {ModuleType}: {module-name}" for test description strings
- standardize on `{module-name}-test.js` for test file names
- fix deprecation notices for ember component unit tests without explicit `unit: test` or `needs: []`
