Implement deactivation of Applets

Actually implements and fixes what was intended with
f401923005

ACardEmulator/app/build.gradle

@@ -31,5 +31,8 @@ dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
     compile 'com.android.support:appcompat-v7:23.0.1'
     compile 'com.android.support:support-v4:23.0.1'
+    compile 'com.android.support:design:23.2.1'
+
+    compile 'com.journeyapps:zxing-android-embedded:3.2.0@aar'
     compile group: 'com.madgag.spongycastle', name: 'core', version: '1.51.0.0'
 }