node address setting

mix/qml/Application.qml

@@ -217,6 +217,7 @@ ApplicationWindow {
 		shortcut: "Ctrl+Alt+V"
 		onTriggered: mainContent.debuggerPanel.assemblyMode = !mainContent.debuggerPanel.assemblyMode;
 		checked:  mainContent.debuggerPanel.assemblyMode;
+		checkable: true
 		enabled: true
 	}
 
@@ -429,7 +430,9 @@ ApplicationWindow {
 	}
 
 	Settings {
+		id: appSettings
 		property alias gasEstimation: gasEstimationAction.checked
 		property alias optimizeCode: optimizeCodeAction.checked
+		property string nodeAddress: "http://localhost:8545"
 	}
 }

mix/qml/js/TransactionHelper.js

@@ -19,7 +19,7 @@ function defaultTransaction()
 
 function rpcCall(requests, callBack, error)
 {
-	var jsonRpcUrl = "http://localhost:8545";
+	var jsonRpcUrl = appSettings.nodeAddress;
 	var rpcRequest = JSON.stringify(requests);
 	console.log(rpcRequest);
 	var httpRequest = new XMLHttpRequest();