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/Shared (App)/HPAPI.m

@@ -56,14 +56,11 @@
 #pragma mark - Public interface
 
 +(NSDictionary *)getAccessTokenMeta {
-    NSString *platform = @"macOS";
-#ifdef TARGET_OS_IOS
-    platform = @"iPhone";
-#endif
+    NSBundle *mainBundle = [NSBundle mainBundle];
     
     return @{
-        @"version": [[[NSBundle mainBundle] infoDictionary] valueForKey:@"CFBundleShortVersionString"],
-        @"platform": platform,
+        @"version": [mainBundle.infoDictionary valueForKey:@"CFBundleShortVersionString"],
+        @"platform": [mainBundle.infoDictionary valueForKey:@"HPAPIAccessTokenPlatform"],
     };
 }