Rendering account trees in Fava 1.25+

[redstreet]

Fava Investor's asset allocation page looked like this. To accommodate the changes in Fava 1.25 onwards, I tried to make these changes. However, this is the result:

Old:

New:

If you or anybody could provide guidance, tips, or pointers on how to approach changing the Investor.html code based on Fava's changes in this area, it would be most appreciated. Thank you!

[iamkroot]

Also hit this when using tree table.

From what I can tell, the <tree-table> tag is no longer valid, and we need to use the TreeTable svelte component somehow. Example: this is the new source for rendering the Balance Sheet page: https://github.com/beancount/fava/blob/main/frontend/src/reports/tree_reports/BalanceSheet.svelte

I have absolutely zero idea how this works for those of us building plugins without a svelte toolchain.

Paging @yagebu for guidance

[yagebu]

Thanks for reporting this - this is also basically a duplicate of #1695, so I'll close this one here - I'll re-add the now unused CSS and JS so that extensions like fava_investor can work unchanged for now. Let's track how extensions could use the "new" tree tables in the other issue.

[redstreet]

Sounds great, thanks much @yagebu!