Alignment is off on API provider error handling page

See screenshot. Alignment is off on API provider error handling page.

• Checkbox should align with the form label.
• Description text should be closer to the section title.
• Column title should align with dropdowns.

Initial UX design is here: https://marvelapp.com/79ea3hh/screen/60071508

I also included a quick fix design here.

rhn-support-hbraun stlewis_2 - I know we're in blocker only sprint right now, depends on where we are with the build process, it would be great if we can get this in for 7.5.

cc: aglass-1