Create a settings file

[jackiekazil]

Make and make sure these items are settable in that file.

• Move dat gui url to settings file, then call the settings file Create a settings file, then call the settings file #60
• Split visualization / templates into two or more folders Split visualization / templates into two or more folders #83

[jackiekazil]

url should be settable
port should be settable

[jackiekazil]

Closing this ticket in lieu of #481