Better Toolbar and Updated Colors

• Toolbar is taller and color matches Google Home in both it's background and font color.
• Toolbar icons now have the tab name underneath them.
• Set ha-card-border-width to 0px for better tile card fix as described here.
• Add margin 12px to sides of view to match screenshots (was previously being done through layout-card).
• Correct toolbar colors, are slightly different than card colors.
• Updated dark mode background color and sidebar now color matches matches toolbar.