Fix tests app paths

apps/tests/xml-declaration/app.ts

@@ -1,3 +1,3 @@
 import application = require("application");
-application.mainModule = "app/xml-declaration/mainPage";
+application.mainModule = "xml-declaration/mainPage";
 application.start();

apps/tests/xml-declaration/mainPage.xml

@@ -1,6 +1,6 @@
 <Page xmlns="http://www.nativescript.org/tns.xsd" loaded="MyPageLoaded"
-      xmlns:customControls="app/xml-declaration/mymodule"
-      xmlns:customControls2="app/xml-declaration/mymodulewithxml">
+      xmlns:customControls="xml-declaration/mymodule"
+      xmlns:customControls2="xml-declaration/mymodulewithxml">
   <TabView>
     <TabView.items>
       <TabViewItem title="Tab 1">
@@ -59,4 +59,4 @@
       </TabViewItem>
     </TabView.items>
   </TabView>
-</Page>
+</Page>

apps/tests/xml-declaration/mymodulewithxml/MyControl.xml

@@ -1,4 +1,4 @@
-<StackLayout xmlns:customControls="app/xml-declaration/mymodule">
+<StackLayout xmlns:customControls="xml-declaration/mymodule">
   <Label id="Label1" text="mymodulewithxml" />
   <Button text="Click!" tap="buttonTap2" /> 
 </StackLayout>