Shouldn't be allowed to add an overlay without a slide created first

WorldWideTelescope / wwt-web-client

The WorldWide Telescope web client lets you explore the universe in your browser.

https://worldwidetelescope.org/webclient/

MIT License

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Shouldn't be allowed to add an overlay without a slide created first #125

Open doctorspaceman opened 8 years ago

doctorspaceman commented 8 years ago

You shouldn't be allowed to try to add an overlay object right after you create a tour but before you have added a slide. Those shouldn't do anything unless there is a slide exists.