fix(vscode): don't request new terminal and don't ask name

Test:

1. Click link to deploy GitKit to hfossedu-stage (you'll only be prompted for the repo name and an access token): https://gitpod.io/?autostart=true#GITKIT_DOCKER_TAG=stoney-vscode-do-not-open-new-terminal,ORG_NAME=hfossedu-stage/https://github.com/hfossedu/gitkit-deployer-gitpod
2. (no need to wait for labels and issues to deploy)
3. Fork it.
4. Open fork in GitPod.
5. You should not be asked a name (it should be in the prompt)
6. You should not be told "IMPORTANT: Before continuing, close this terminal and open a new one."

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Closes #117 (closed)