Fix file not being opened when creating new project.

The change in the previous commit seems to have caused a problem where
when the solution is saved the project's ParentSolution is set to
null. The first time a new DNX solution is created the ParentSolution
is not null and the file is opened into the text editor. The next time
a solution is created or a new project is added to the existing
solution as soon as the solution is saved the ParentSolution for the
project gets set to null for some reason. For now I have just worked
around this by opening the file before the solution is saved since at
this point in time the project's ParentSolution is not null.

Author: mrward

src/MonoDevelop.Dnx/MonoDevelop.Dnx/DnxProjectTemplateWizard.cs

@@ -150,10 +150,11 @@ void CreateProject (Solution solution, SolutionFolder srcFolder, bool newSolutio
 
 			CreateFilesFromTemplate (project);
 
+			OpenProjectFile (project);
+
 			IdeApp.ProjectOperations.SaveAsync (solution)
 				.ContinueWith (t => {
 					Runtime.RunInMainThread (() => {
-						OpenProjectFile (project);
 						DnxServices.ProjectService.OnSolutionLoaded (solution);
 					});
 			});