Updates requiring translation

[dagurval]

This issue is to track updates that require translation.

• installation instructions updated #67 Changed apt:install & apt:run - translations needing update: ru, de
• Added statement on donations to the FAQ #69 Added FAQ item about donations - translations needing update: ru, de
• Add an article about free transactions #71 - translations needing update: ru, de
  • Changed doc:guides to doc:articles
  • Added section articles: