-added bootstrap responsive css
-added hover element and css for linked items
-added disabled element and css for disabled items
-added masked element and css for unfocused items
-hovered items remove masked items to avoid alpha collision
-hovered element collapses to mobile element on mobile media
-fixed css hierarchy to match new article DOM hierarchy
-fixed iso-item directive to reflect DOM hierarchy changes and include new class swaps
-all states are handled by removing and adding classes now