Summary:
Also fix few clode glitches
- Attach events handler to the scrollPane using `onMatch` instead of
the cell itself. This streamline cell dom creation a bit while
scrolling.
- Fix memory leaks on contextMenu.
- Also fix Importer and ColumnOps nbrowser test
see:
https://phab.getgrist.com/D3237#inline-36376https://phab.getgrist.com/D3237#inline-36375
Restore default context menu for where there's no custom one
It appears that default context menu adds some value, in particular
for links and for editing text. This diff restores it.
Test Plan: Should not break anything.
Reviewers: paulfitz
Reviewed By: paulfitz
Differential Revision: https://phab.getgrist.com/D3256
7cc3092e1b