Add translation support

[forevermatt]

Update the view templates, etc. so that the page can be displayed in the main languages we support.

[forevermatt]

One useful tool for formatting messages (especially dates) is the msgfmt_format_message (or MessageFormatter) feature in PHP.

For reference (since it wasn't immediately apparent for me), if you scroll down this page to the table, you will see several codes available to use in your messages.

Example:

echo msgfmt_format_message(
    'en',
    'Today is {0,date,long}',
    [time()]
);

That will output the following:

Today is July 12, 2017