beginning of 2.2

- added download popup to solve the issue with downloads on ios
- merged big and small popups into one
- made buttons in donation menu act like buttons
- began to clean up localisation
- added ability to embed repo url into localisation strings
- moved ffmpeg args to config for more flexibility (and hopefully future changes)
- removed error response in stream that could result in a crash
- removed notice for ios users from about cause it's no longer relevant
- made error popup look and act like the rest
- a tiny bit of clean up
- ill do better changelog tomorrow i think

strings/en/accessibility.json

@@ -6,5 +6,5 @@
     "changelog": "Changelog",
     "close": "Close button",
     "alwaysVisibleButton": "Keep the download button always visible",
-    "donate": "Support {appName} by donating"
+    "donate": "Support development of {appName} by donating"
 }