Merge branch 'dev_0_9_session_to_local_storage' into dev_0_9

Former-commit-id: 52460cf53397609d6ad1e23597af21b170246042

kadmos/vistoms/templates/VISTOMS_sessions.html

@@ -31,6 +31,22 @@
 			{
                 alert("OOPS! VISTOMS unfortunately does not work properly on " + bowser.name + ". Please use a different browser to see its awesome visualization features!")
 			}
+
+			/* see docs: https://developer.mozilla.org/en-US/docs/Web/API/Window/localStorage */
+			if (window && window.localStorage)
+			{
+				var storage = window.localStorage;
+				var existingSessionId = storage.getItem('sessionId');
+				if (existingSessionId)
+				{
+					sessionID = existingSessionId;
+				}
+				else {
+					storage.setItem('sessionId', sessionID);
+				}
+			}
+
+
             
             //aigner: Include function
 			function include(arr,obj) {