Make navigation highlighting method more dumb

People sometimes forget to add their controllers to this method,
so for now everything in Limelight is "Services".
Right align EVL error numeric columns
EVL graphs default to monthly tab
Change triangle colours to match GOV.UK dashboard
Typos and tweaks
Set initial EVL applications query to month
Merge pull request #174 from alphagov/evl-design-tweaks-55566004

EVL design tweaks [#55566004]