display the last opened entry as an additional dataset, helps to fill paypal app and helps with partitioned data

src/Kp2aBusinessLogic/database/Database.cs

@@ -289,6 +289,7 @@ namespace keepass2android
 			CanWrite = true;
 			_reloadRequested = false;
 			OtpAuxFileIoc = null;
+		    LastOpenedEntry = null;
 		}
 		
 		public void MarkAllGroupsAsDirty() {

src/Kp2aBusinessLogic/database/PwEntryOutput.cs

@@ -56,5 +56,10 @@ namespace keepass2android
 		{
 			get { return _entry; }
 		}
+
+        /// <summary>
+        /// if the entry was selected by searching for a URL, the query URL is returned here.
+        /// </summary>
+	    public string SearchUrl { get; set; }
 	}
 }