Fix vodcast detection

Twitch has changed the value of the broadcast_platform and stream_type
attributes from "watch_party" to "rerun" in the "stable" kraken/v5 API.

src/app/models/twitch/Stream.js

@@ -35,6 +35,8 @@ const fpsRanges = [
 	{ target: 144, min: 142, max: 146 }
 ];
 
+const reRerun = /rerun|watch_party/;
+
 
 export default Model.extend({
 	i18n: service(),
@@ -75,8 +77,8 @@ export default Model.extend({
 		"channel.status",
 		function() {
 			if (
-				   get( this, "broadcast_platform" ) === "watch_party"
-				|| get( this, "stream_type" ) === "watch_party"
+				   reRerun.test( get( this, "broadcast_platform" ) )
+				|| reRerun.test( get( this, "stream_type" ) )
 			) {
 				return true;
 			}

src/test/tests/models/twitch/Stream.js

@@ -215,12 +215,24 @@ test( "Computed properties", function( assert ) {
 	});
 	assert.ok( get( record, "isVodcast" ), "Is a vodcast now" );
 
+	setProperties( record, {
+		broadcast_platform: "rerun",
+		stream_type: "live"
+	});
+	assert.ok( get( record, "isVodcast" ), "Is still vodcast/rerun" );
+
 	setProperties( record, {
 		broadcast_platform: "live",
 		stream_type: "watch_party"
 	});
 	assert.ok( get( record, "isVodcast" ), "Is still a vodcast" );
 
+	setProperties( record, {
+		broadcast_platform: "live",
+		stream_type: "rerun"
+	});
+	assert.ok( get( record, "isVodcast" ), "Is still a vodcast/rerun" );
+
 	setProperties( record, {
 		broadcast_platform: "live",
 		stream_type: "live"