[App Management] Add i18n

This CL sets up i18n for the app management page.

Bug: 906508
Change-Id: Ie17b5fa1af00cde9f8a82b7ab94caed0afb24e2a
Reviewed-on: https://chromium-review.googlesource.com/c/1362674
Reviewed-by: calamity <calamity@chromium.org>
Reviewed-by: Eric Willigers <ericwilligers@chromium.org>
Commit-Queue: Reka Norman <rekanorman@google.com>
Cr-Commit-Position: refs/heads/master@{#615045}
4 files changed