Update the revision slider so that it does not cover the bottom of long notes

[sandymcfadden]

Fix

With the update to the slider position, it was sitting over top the bottom of long notes. So you couldn't see changes happening at the end no matter how far you scrolled.
This also fixes a problem with the position of the date above the slider.

This resolves #2655

Test

1. Have a note with enough content that fills the editor.
2. Open the history for the note.
3. Ensure you can scroll and see all the note content.
4. Ensure the revision date is centered above the slider handle.
5. Ensure the date is not cut off the side of the app.

Release

• Fix the revision slider so that the full note is visible and the position of the revision date.

[codebykat]

Looks good. I think this should also be a hotfix against release/2.7.0. I'll leave the rebase to you for practice :)

[codebykat]

Oh also when you rebase against release/2.7.0 don't forget to add a line to the release notes :) (Just setting as Changes Requested to make sure you see this)

[sandymcfadden]

@codebykat you were right about me needing the practice. It looks like I still need more and that I messed this up again.
Also, I'm not sure I need to add anything to the release notes as there is already a line about updating the revision slider? Let me know what you think.

[sandymcfadden]

Thanks so much, @belcherj for helping me get this PR fixed up with the git lesson.

[codebykat]

Also, I'm not sure I need to add anything to the release notes as there is already a line about updating the revision slider? Let me know what you think.

Yeah, fair. So what I would do is edit the release notes to add a link to this PR as well. You can see prior examples where we had more than one PR linked for a single line.

Nice work on the git fix! I love that JB and I have totally different methods of resolving that issue. Git: There is always more than one correct way to shoot yourself in the foot. 😂

[sandymcfadden]

Thank you @codebykat! I've updated the release notes now.

[mokagio]

Thanks @codebykat 🙌 !