Bug 925278: add new locales to firefox/channel redirect

Added locales: fy-NL, pl, uk
Bug 935877 - Enable VTCS and Lightbeam for more locales

Added locales:
* VTCS: es-AR, fr, fy-NL, mk, pl, sq, uk
* Lightbeam+Webmaker: cs, cy, fy-NL, pl, uk
Merge pull request #1406 from flodolo/more_locale_home

Bug 935877 - Enable VTCS and Lightbeam for more locales
Merge pull request #1407 from flodolo/channel_locales

Bug 925278: add new locales to firefox/channel redirect
Merge pull request #1410 from pmclanahan/fx-download-broken-link-no-build-924347

Fix bug 924347: Fall back to en-US download locale.
Bug 779751: Newsletter updated only accept UUIDs for token.
Prevent tests from making network calls.

While fixing bug 779751 I found some tests that
were calling out to basket and salesforce. These
changes should mock all of that.