refs #5652
- ensure gh-spin-button passes type & tabindex through to markup
- add gh-input class to auto focus input
- add tabindexes to setup/two + make first field autofocus and button submit
closes#5317
- Adds back button to steps 2 and 3
- Prevents user navigating from step 1 to step 3 unless blog has been created
- Prevents user navigating from step 2 to step 3 unless blog has been created
closes#5336
- creates gh-form-group component to handle form group status
- refactors current validation methods to work on a per-property basis
- adds gh-error-message component to render error message
- removes (comments out) tests that pertain to the old notifications until the new inline validation is added
