Table block doesn't save alignment data

Here’s an example of what table JSON data looks like (from a StreamField form submission):

body-10-value:{"data":[["hello","world","sup"],["hii","yoooo",null],[null,null,null]],"first_row_is_table_header":false,"first_col_is_header":false}

However, you can right-click any cell, and choose Alignment > Left / Right / Center, among some vertical options, too. This data also needs to be saved into the JSON so it can be templated.

It’s probably too late for every cell to have its own “options” attribute, so I’m guessing alignment will need to be passed in as a map, like

"alignments": [{"cell": "0,1", "alignment": "left"}, {"cell": "2,2", "alignment": "center"}]

etc

[AtomicSpark]

Although it is implemented in the handsontable code and currently non-functioning in Wagtail, HTML align attributes are depreciated in HTML5 and should not be used. I vote that we disable align features in handsontable if possible, before this turns into a Wagtail image debate on whether or not we inject surprise CSS into templates.

[robslotboom]

I agree with this but why not replace the html alignement attributes by alignment classes.