Fixed navigation background coloring
Fixed gulpfile responsive stylesheets compile order
Fixed javascript code for subnavigation to only trigger when it's visible
Reduce teaser font-size on narrow screens
Removed outdated navigation js code
Further tablet styles for home page
Minor documentation improvements
Close mobile navigation after clicking on an item
Added navigation background effect to hamburger button
Fixed body margin and nav height on mobile with hidden subnavigation
Added footer style for narrow screens
Set mobile navigation background color to grey
Disabled android blue background highlight color on click
Fixed jura font face declaration
Fixed content padding with button widget