Responsive tweaks

[dotsam]

Some tweaks to better support mobile widths. The diff here doesn't look great owing to some larger markup/nesting changes, but here's what's happening:

• Tweak the data tables layout, as it appears it was using some Bootstrap 4 markup that's no longer valid
• Tweak the single part info, mainly making the image full-width and smaller screen sizes so that the image slider is usable and therefore the other two columns have more width to display in
• Added some more checks around part properties so no empty markup is output
• Converted the displayed part properties into a <dl> Description List and removed the use of <h6>, as this is a better semantic fit. Also provided more accessible markup while retaining the tooltips

If this final change to <dl>'s looks okay to you, I'm also working on doing the same thing to the single part "sidebar" and can submit a PR for that too

[jbtronics]

looks good, thank you.
I will just adjust the font-weight of the

elements to match the

style, as they should appear slightly highlighted over normal text.