Improved formatting of Parts parameters

[crazyelectron-io]

When showing parameters on the Part overview page, the formatting is a bit off. The value column for some parameters is shifted to the right, as can be seen in the below screenshot.

Not a big issue at all, but just reporting it.

[devstuff]

Each group of parameters is being rendered as it's own table, with the heading actually rendered as a H5 tag outside the table. The alignment would be correct if the heading was rendered as a table row spanning multiple columns, and the entire list was in a single table.