Added the ability to define static ports for each workflow project

[thecooltechguy]

You can now define a static port for each created/imported project.

When specified, the Launcher will always open that project on that port, and when not specified, the Launcher will open the project on a random, unused port.

To set/edit the fixed port for any existing project, go to the project's folder within server/projects/<project name> and create a port.txt file containing just the fixed port number you want that project to always run on.