HTML Table Validator - Initial Migration to WET 4.0
Merge pull request #5304 from duboisp/table-v4.0

HTML Table Validator
Core: Add GUID method

Replace separate random ID generators with a single implementation.
Having a single stub-able method will make it easier for testing.
Slider polyfill: Standardized event handling to address Android issues (fixes #5300)
Merge pull request #5316 from pjackson28/fixslidervalue

Slider polyfill: Standardized event handling to address Android issues (fixes #5300)
Added same margin top to h1 as to h2 (fixes #5211)
Documentation: Changed Accolades page to Awards, articles and videos (fixes #5237)
Merge pull request #5317 from pjackson28/settopmarginh1

Added same margin top to h1 as to h2 (fixes #5211)
Merge pull request #5318 from pjackson28/changeaccolades

Documentation: Changed Accolades page to Awards, articles and videos (fixes #5237)
Updated references to awards, articles and videos page
Merge pull request #5319 from pjackson28/changeaccoladesrefs

Updated references to awards, articles and videos page
Merge pull request #5315 from nschonni/wb-guid-method

Core: Add GUID method
Rename files to align with Bootstrap viewports

- Moved the Calendar theme file as it wasn't referenced before
- Renamed core SCSS files to `_base.scss` except for the polyfills that are supposed to output
- Renamed print view to `_print.scss` and `_print-ie8.scss`
- Rename IE8 fallbacks to `_ie8.scss`
- Combined the Details/Summary bases that where in src/base with the polyfill's SCSS