release 1.5.0: one panel in all channels; Apple apps (iOS, new macOS tab) only in beta/dev

- stable gets the beta panel and server features (new design, presets, firewall,
  monthly traffic, router failover over all ports/addresses + TCP, altip, HR tab,
  Windows tab, update banner); ios/ macos/ windows/ sources stay out of stable
- menu item "Update to N" under Settings when a new version is out
- mobile: top menu no longer stretches to 200px
- urllib User-Agent: Cloudflare in front of git.bobyrev.com returns 403 to Python-urllib
- docs: GitHub adleibzon-rgb as source, password/uninstall/devices sections,
  new screenshots, PORTS.md TCP fallback and second IP

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

ios/App/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -1 +0,0 @@
-{"images":[{"filename":"icon-1024.png","idiom":"universal","platform":"ios","size":"1024x1024"}],"info":{"author":"xcode","version":1}}