Session List

[jameskerr]

Added a sessions pane in the left sidebar.

Whenever a new query tab is created, a new entry will be added to the list of sessions. When the tab is closed, the session entry will remain. When the session is clicked, it will either activate the associated tab if it exists, or it will restore that tab, along with it's history. You can right click a session to delete it. Deleting it will destroy the associated tab and history.

The display name of the tab is text of the most recent query in that sessions history.

• Make Sessions Global
• Migrate sessions and session history
• Fix the "query pool" not using the proper "create session" flow

Fixes #2746
Closes #2467

[philrz]

I'm currently testing this branch at commit 0babafa.

This is a fairly small thing I noticed during testing. It's not the easiest to trigger, but the attached video and steps below seem to trigger it reliably.

1. Load some data
2. Click to the Sessions list in the left panel
3. Close the pool page for the data just added
4. Start one Session and run a count() on the pool
5. Start a second session and run a search (e.g., google) on the pool
6. Right-click and delete the Session with count() from the list

An empty slot is left behind for the deleted tab. This empty slot is filled in as soon as I click another tab. I'm guessing we'd have wanted the tab slots to tighten up as soon as the Session was deleted.

Repro.mp4

[philrz]

I've verified the fix of two issues I previously reported on this branch and haven't noticed any new problems, so I'm 👍 on it. @jameskerr and I discussed offline that the "tab bug" described in #3132 (comment) will be addressed in a follow-on PR after this one merges.