Removed category titles from "categories" view, not needed for maps.ox

Added map-options for Uni/Amenities and sort options A-Z or nearby
Added Maki icons as a submodule
Updated maki to a commit with the "car" icon
Added the public transport/driving/cycling button toggles
Add basic sorting options to search results template
Set "active" class when location is enabled

Allows us to colour the button when it's active so users know the
feature is enabled.
Style map-options widgets
Allow for toggleLocation to be called directly
Added some variables for maps.ox styling
Refactored to use variables
Style "additional-toggles" for transport options
Further styling on the MapLayout

 - Active states for toggle buttons
 - Correct cursor for toggle buttons
 - Make use of newly added variables
 - Added TODO to highlight problem setting heights for the icons
Style input box and pad content-browse for the additional-toggles