Add a setting for whether to show comments

[tagnja]

As someone who is not from an English-speaking country, I need to show comments in my native language.

For example:

[1ilit]

Hey @tagnja, thanks for the suggestion

You can see the comment if you click the more button on the table

or hover over the column to see the column comments

I think adding comments directly to the diagram would crowd the UI too much

[tagnja]

Comments are not displayed by default. But they can be shown through settings.

If comments are not displayed, it is not possible to export an image with comments.