Awkward UX around building an image and then launching

[choldgraf]

The UX around building an image and then launching is a bit confusing. Here are some things that I saw folks getting tripped up by:

• Do you have to click "build image" every time you launch? Or can you just go straight to launch? What happens if you launch without building?
• When you click the "build image" button, the user was expecting the server to start - they waited 30 seconds before looking more closely at the logs and realizing they had to scroll down and launch. They were expecting a mybinder.org style auto-launch
  • Suggestion: a second "launch server" button could pop up next to the "build" button upon success

Here's an image of the two buttons to give an idea for the confusion - for folks with short screens, the "start server" button is off the page, and so they didn't even know it was there.

[sunu]

I think we have addressed this already in #149 by combining the build and start buttons. Here's a screenshot of that from the VEDA staging hub:

@choldgraf do you think that works as a reasonable solution?