gui: Upgrade management library and relevant gui parts

Change-Id: Ib1875b5d844df0853892e41b2c02aae7c8a5f65f
Fixes: #3399
diff --git a/build.gradle b/build.gradle
index 32c901f..e40b82e 100644
--- a/build.gradle
+++ b/build.gradle
@@ -8,7 +8,7 @@
         }
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.0.0-alpha6'
+        classpath 'com.android.tools.build:gradle:2.0.0-beta5'
         classpath 'net.named-data.playground:play-publisher:1.2.0-2-SNAPSHOT'
 
         // NOTE: Do not place your application dependencies here; they belong