Donation button in settings page

Background / User story

As ABP I would like to ask the advanced users to rate/donate so they can support us

What to change

• Design: https://eyeogmbh.invisionapp.com/share/J9X0PA2PD3F
• Research: (Link to any research data here)
• Spec: eyeo/specs/spec!331

Hints for testers

• The new donate button should link to https://adblockplus.org/redirect?link=donate_settings_page&lang=$lang where,$lang is the browser language, and it should be redirected to https://adblockplus.org/$lang/donate?utm_source=abp&utm_medium=settings_page&utm_campaign=donate.
• Locales supported (16): ar, de, el,en_XX (fallbacks to en), es_XX (fallbacks to es), fr, hu, it, ja, ko, nl, pl, pt_BR, ru, tr, zh_CN.

Hints for translators

• Renamed strings (see comment):
  • options_rating_description by options_supportUs_description
  • options_rating_title by options_supportUs_title
• Update description and message for string options_supportUs_description (see previous renaming).
• Added new string: options_donate_button.

Integration notes

• Requires HD#1028 (internal) and remove skin/icons/star.svg (https://gitlab.com/eyeo/adblockplus/abpui/adblockpluschrome/-/merge_requests/68)