WAI-ARIA support

- Replaced .hide() / .show() so there are no inline styles.
- Add IDs to tags that need to be reference by form labels
- Add `aria-hidden` to hidden divs
- Scheduler - repeat weekly to checkbox btn-group
- Updated unit tests due to markup changes

Tested against: https://chrome.google.com/webstore/detail/accessibility-developer-t/fpkknkljclfencbdbgkenhalefipecmb?hl=en

- Also .pull-right dropdown menus depreciated: http://getbootstrap.com/components/#dropdowns-alignment