web: settings reset confirmation, icons for small dialog

- cleaned up dialog i18n
- better red color
- made :active state visible for dialog buttons on mobile
- better body padding in small dialog
- better small dialog typing with optional values

web/i18n/en/settings.json

@@ -93,5 +93,7 @@
     "advanced.debug": "debug",
     "advanced.debug.title": "enable debug features",
     "advanced.debug.description": "gives you access to a page with app & device info useful for debugging.",
+
+    "advanced.data": "settings data",
     "advanced.reset": "erase all settings"
 }