Add a way to go back to older versions

[code-asher]

Currently, if you try to use a recent connection and choose to accept the upgrade prompt, you have no way to go back to the older version. This can be a problem if there is some bug in the newest IDE.

In the recents window, we should add a dropdown picker to the version column that allows selecting an older version. I think maybe what we do is make another query for the past N versions and allow the user to downgrade. Or we could keep track of the past N versions the user has actually used and avoid the query altogether, just need to store that info along with the recent connection. Downside to that is it will only help in the future and not for users that already need to downgrade since we are not currently storing that info.

[stirby]

We should do this! Thanks for adding design notes.