Wrapped template strings with l function.
Wrapped view strings in localize function.
Fixed unclosed l block.
Merge branch 'dev' into l10n
Updated UI text.

Based on matej's changes here: https://bugzilla.mozilla.org/show_bug.cgi?id=1028350#c17
Merge branch 'dev' into l10n
Fixed missing {{#l}} block around placeholder text
Merge pull request #260 from mozilla-services/l10n

Prepare front-end for localization