Generate locale translation strings

Command used: bundle exec rake gettext:find_theme
Adjust size for Spanish text.
Add appropriate license

This theme is derived from http://tuderechoasaber.es, so needs an CC-SA
compatible license.
Add footer template.
Add footer translations.
Add some placeholder logos.
Add footer links
Remove footer layout

Handling this in _footer_layout.scss
Set incoming and outgoing correspondence colours.
IE7 and 8 fixes.
Older IE fallbacks for block grid
Don't include the locale border.

The production site only has one locale (at the moment).
Use smaller background image for IE, smaller elements within it.

We're constraining older IE to 58ems altogether.
Less padding for older IE.
Add some padding for footer logos.
Use a lighter blue for the selected background in the small nav menu
Typo fix.
Add User#id_number attribute
Require User#id_number attribute
Allow additional MVC to be defined in lib/app

Expected location is in lib/app/models etc.