MENU: Re-engineered menu plugin
Merge pull request #3976 from masterbee/menureg

MENU: Re-engineered menu plugin
Calendar: Update header when changing months
Calendar: Fixes to the goto form

We don't have a fieldset anymore; target <form>
Month dropdown was one short.
Merge pull request #3977 from berubs/cal-goto-form

Calendar: Fixes to the goto form
Merge pull request #3971 from berubs/cal-month-nav

Calendar: Update header when changing months
Datepicker: Tweak abbr

* Changed markup to include dashes
* Filter abbr from toggle button text
* Show date format in label when polyfill is active
Merge pull request #3979 from berubs/datepicker-abbr

Datepicker: Tweak abbr
Menu: Closes mobile menu when switching to medium, large or extra large view (fixes #3980)
Merge pull request #3987 from pjackson28/closemobilemenuonviewchange

Menu: Closes mobile menu when switching to medium, large or extra large view (fixes #3980)
Menu: Hid mobile menu search field label (fixes #3981)
Merge pull request #3989 from pjackson28/hidemoblemenusearchlabel

Menu: Hid mobile menu search field label (fixes #3981)
Resize: Hid resize test off the top of the screen to eliminate space at the bottom of the page
Merge pull request #3990 from pjackson28/hideresizetestoffscreen

Resize: Hid resize test off the top of the screen to eliminate space at the bottom of the page
Tabs: SCSS fixes and improvments
-Fixed the figcaption not being clickable in carousel style 2
-Added placeholders
Menu: Fixed header text of mobile menu (fixes #3982)
Merge pull request #3992 from pjackson28/fixmobilemenuheader

Menu: Fixed header text of mobile menu (fixes #3982)
Toggle: fix WAI-ARIA with `summary` element as accordion tab
Merge pull request #3988 from patheard/toggle-wai-aria

Toggle: fix WAI-ARIA with `summary` element as accordion tab
Toggle: add plugin unit tests