Sync docs to v1.8.0: push/pop networks, Zone Killer, conversion popups, social preview Home page stamp to v1.8.0 (was v1.6.19); new pages Push-and-pop-networks, Conversion-popups, Creatives-Library, External-PWA-and-Telegram-Channels, FB-Comment-Cleaner; features/campaigns/costs/reports updates and the v1.8.0 additions section.
Docs in English: 32 pages, Russian archive in docs/ru/ (spec pages unpublished)
Sync wiki from docs/ (36 pages, v1.6.18)