Merge branch 'fp2-2000' into 'master'

FPII-2000: Fairphone Updater app itself should use clear version numbering

Make the build system version the Updater.

See merge request !24
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 92867d9..eec63b7 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -1,9 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
           xmlns:tools="http://schemas.android.com/tools"
-          package="com.fairphone.updater"
-    android:versionCode="31"
-    android:versionName="31" >
+          package="com.fairphone.updater" >
 
     <uses-sdk
         android:minSdkVersion="17"