bump version to 0.20.4

Author: kroepke

app/lib/Version.java

@@ -49,8 +49,9 @@ public class Version {
     public static final Version v0_20_2_RC_1 = new Version(0, 20, 2, "rc.1");
     public static final Version v0_20_2 = new Version(0, 20, 2);
     public static final Version v0_20_3 = new Version(0, 20, 3);
+    public static final Version v0_20_4 = new Version(0, 20, 4);
 
-    public static final Version VERSION = v0_20_3;
+    public static final Version VERSION = v0_20_4;
 
     public final int major;
     public final int minor;

project/Build.scala

@@ -5,7 +5,7 @@ import play.Project._
 object ApplicationBuild extends Build {
 
   val appName         = "graylog2-web-interface"
-  val appVersion      = "0.20.3"
+  val appVersion      = "0.20.4"
 
   val appDependencies = Seq(
     cache,