Style search feature for map view

Style scrollable list of input predictions for better user experience:

• bold place name or search query
• treat address as sub value and place under place name
• scrollable list should be hidden by default in primary map view; just search input available

On focus (user clicks on input box):

• [obsolete] hamburger icon (#179) should be replaced with a return icon which on click returns user to primary map view
• unhide / overlay scrollable list with default search history (cached search only if user isn't logged on) as options.

On input (user types a search query):

• scrollable list updates with predictions, include search history options that match current input along with result of input prediction

On submit (user hits enter or clicks on resulting options):

• update map to location of selection and add marker at the location