fix: insert column/row buttons not working

[johnny243]

Fixes #12 and standardnotes/forum#386

[johnny243]

Actually, the previous code tried to insert the column/row AND increase the column/row by one.

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So far, this PR has the following features/fixes:

• ability to use the insert column/row buttons
• when inserting columns/rows, the columns/rows number should be increased

[bryvin]

Hi Johnny,

Hope all is well! A year ago I had messed with fixing this and I believe I had a working solution which I have up here on a commit: bryvin@3648c17

Maybe this can be of some help, it's a bit hacky but with the way KendoUI loads/renders the spreadsheets it was a little difficult to adjust the size after it had been rendered. So hijacking the render call after using one of the built in events to insert a row/column and triggering a fresh build of the sheet from the JSON data on the next render with the new size seemed to have fixed it.

[johnny243]

Hi @bryvin!

Thanks for letting me know about your fix, it's working great so far!

[bryvin]

I was under the impression this wasn't originally merged back in January due to all undo history being removed when rebuilding the sheet after inserting/removing rows and columns. Was that fixed at all?

[johnny243]

Hey @bryvin, before version 1.3.7, the undo/redo buttons did not work after inserting/removing columns or rows. So merging this PR will not break anything.

[bryvin]

Ah, perfect then! Glad you got this in :)