Allow a version override for the install script.

So you can more easily set up a development environment on a clean
server, checking out master.
Fix about controller test
Better make_css, doesn't die if grep too long.
Replaced hardcoded Mapit-URL in error message to use variable from config instead
Changed hardcoded URL in Problem.pm to be using variable from general.yml instead.
The string 'Get updates' wasn't localized
A missing i18n string.
Updated MapQuest links per instructions
Update test to match text change in June.

Silly me.
Merge remote-tracking branch 'upstream/master'