* remove static UXPL + lib files from root
* updating edx-pattern-library npm version to 0.8.12
* resolving UXPL syntax/version changes
* syntax/spacing corrections
* correcting npm-based lib paths
* UXPL update - syncing up sass LTR/RTL compile
* UXPL update - font-size, line-heights, + colors
* UXPL update - breakpoint names
* UXPL update - removing unnecessary %reset-link reference
* customizing UXPL buttons for banner actions