Make it easy to try out a url on a physical mobile device

It is tedious to type in url's, especially ones with just ip numbers on mobile devices thus we should provide a way to make this easy.

Usecases:

• You are developing on your machine and want to test on your own physical phone
• You are presenting at a conference and want your audience to visit your website running in cloud or on the local network

Suggestions:
Provide a way to show the QR code for a URL in the following locations:

• Browser and CordovaSim
• Provide "Show In > QR Coded URL" for an app/module
• Command that will take what is in clipboard/typed in and show the QR code

In some cases there might be more than multiple possible urls to use - i.e. you are setup to use http://localhost:8080 but that is not going to help anyone trying to connect thus should make it easy to adjust the host part so you can type in the real host.