Bugfixes and menu. Matthew, get the Satnav stuff in toggleCheckin
working please. It's similar to the previous toggleSatnav method, which
also didn't work.
Merge branch 'master' of https://github.com/CiaranDeasy/race_the_wilds

Conflicts:
	project/res/layout/activity_main_menu.xml
And that's the menu. It now updates every 50 seconds when you're on the
menu screen, which means mad people who want to look at the screen
constantly will be satisfied.