Fix drawer menu item

src/main/AndroidManifest.xml

@@ -77,7 +77,7 @@
         </activity>
         <activity android:name=".ui.activity.ManageAccountsActivity" />
         <activity android:name=".ui.activity.UserInfoActivity" />
-        <activity android:name=".ui.activity.NotificationsActivity" android:launchMode="singleInstance"/>
+        <activity android:name=".ui.activity.NotificationsActivity"/>
         <activity android:name=".ui.activity.ParticipateActivity" />
         <activity android:name=".ui.activity.ActivitiesListActivity"/>
         <activity android:name=".ui.activity.FolderSyncActivity" />

src/main/java/com/owncloud/android/ui/activity/NotificationsActivity.java

@@ -23,6 +23,7 @@
 package com.owncloud.android.ui.activity;
 
 import android.accounts.Account;
+import android.content.Intent;
 import android.os.Bundle;
 import android.support.v7.widget.DividerItemDecoration;
 import android.support.v7.widget.LinearLayoutManager;
@@ -108,6 +109,14 @@ public class NotificationsActivity extends FileActivity {
         unbinder.unbind();
     }
 
+    @Override
+    public void showFiles(boolean onDeviceOnly) {
+        super.showFiles(onDeviceOnly);
+        Intent i = new Intent(getApplicationContext(), FileDisplayActivity.class);
+        i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
+        startActivity(i);
+    }
+
     /**
      * sets up the UI elements and loads all activity items.
      */