Show data for queries present only in one profile in comparison

[tgnottingham]

Add showing rows for self-profile queries present only in base profile,
and add showing deltas for queries present only in main profile.

Fixes #1022.

[tgnottingham]

Where base profile doesn't have lit_to_const query (deltas are added):

Where only base profile has lit_to_const query (row is added):

---

For reference, here is the before:

Where base profile doesn't have lit_to_const query (deltas are missing):

And for the other case, the row wasn't present before.

[tgnottingham]

Added showing executions delta as integer as well:

[Mark-Simulacrum]

I think you should have permission to merge, so please do so when you think this is good -- I gave a quick skim and the changes look good to me :)

Generally don't feel you need to wait on review, particularly for UI improvements like this.

[tgnottingham]

Alright, thanks!