Bug972573, The selection screen for adding a contact with multiple phone...

... numbers to a SMS message lacks a cancel, back, or 'x' button

It correspondence of reviews.
https://github.com/mozilla-b2g/gaia/pull/20051

https://bugzilla.mozilla.org/show_bug.cgi?id=972573
please change `select_recipient` to `Select recipient`. Explanation:
As I asked before - this node should contain the value of the `select_recipient` locale, not the name of the locale. Our localization library renders all the HTML, and then, when locales are loaded, it changes it for the proper language. In this case, it's possible that user will see `select_recipient` as a header for part of the second before the locales will be loaded and changed to `Select recipient`. In case I didn't explained something well enough, please don't hesitate to ask.