Bump app version to 1.6.1

AndroidManifest.xml

@@ -18,8 +18,8 @@
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  -->
 <manifest package="com.owncloud.android"
-    android:versionCode="10600000"
-    android:versionName="1.6.0" xmlns:android="http://schemas.android.com/apk/res/android">
+    android:versionCode="10600100"
+    android:versionName="1.6.1" xmlns:android="http://schemas.android.com/apk/res/android">
 
     <uses-permission android:name="android.permission.GET_ACCOUNTS" />
     <uses-permission android:name="android.permission.USE_CREDENTIALS" />