BTHLABS-58: Tweaks and fixes

* Use explicit values to populate access token's platform in apps.
* Fix View Association layout.
* Web Extension popup layout rework.

services/apple/iOS (Share Extension)/Info.plist

@@ -2,6 +2,8 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
+	<key>HPAPIAccessTokenPlatform</key>
+	<string>iPhone</string>
 	<key>NSExtension</key>
 	<dict>
 		<key>NSExtensionAttributes</key>