Add extra font choice for export
Save some space in the plan settings form
Update settings indicator.

Now uses a helper, shows template message if plan settings
are equal to template settings, and makes sure margins are
ints.
Fix for serif font not being applied correctly to PDF

Replacing the variable with the equivalent string literal worked, so
I’m not sure quite what’s going on here. However, stripping the
double-quotes out of the string fixes the problem.
Merge branch 'uoldmp-export/format-settings'

Some presentational issues to be addressed, but functionality is there. Need to think about how we present the options to users, what range of sizes/margins are appropriate and how best to describe the font face options.
Merge origin/master into export/pdf-whitespace