Fixes, Features, Markup Changes

-Fixes
IE8 Button line break
IE8 Position Placement lost when clicking out Donate BTN
Modal Close updated to Image
Modal BG placement issues
Video size in modal issues
Removed style conflict with transition markup

-Features
Changes to make Video Gallery more mobile friendly, updated JS libraries
Auto play first video

Markup Changes
Markup changes from changes to Video Gallery

	new file:   MarkupChangeLog.md
	modified:   assets/css/app.css
	modified:   assets/haml/index.haml
	modified:   assets/haml/layout-storyPrimary.haml
	modified:   assets/haml/layout-storyTertiary.haml
	modified:   assets/html/index.html
	modified:   assets/html/layout-storyPrimary.html
	modified:   assets/html/layout-storyTertiary.html
	modified:   assets/js/app-ck.js
	modified:   assets/js/app.js
	new file:   assets/js/libs/leanModal-ck.js
	new file:   assets/js/libs/leanModal.js
	modified:   assets/js/sitescripts.min-ck.js
	modified:   assets/js/sitescripts.min.js
	modified:   assets/scss/components/_bit-chapters-prevnext-nav.scss
	new file:   assets/scss/components/_bit-popup-core.scss
	modified:   assets/scss/components/_bit-rwd.scss
	modified:   assets/scss/components/_bit-toggle-door.scss
	modified:   assets/scss/components/_bit-vid-gallery-core.scss
	modified:   assets/scss/components/_import-bits.scss