Implement design system button styles

[shawnbot]

For DESSYS-85 and the recently discovered issue with form navigation on sf.gov after deploying this change.

Some good URLs to test are:

• Review component example
• Preview of "Check what forms you need for your business permits" compared to the live form

This is tricky to debug, so in order to test with exactly the same CSS that's on sf.gov I've added a new dynamic CSS endpoint, /sfgov/forms.css, that loads the feedback form, scrapes both stylesheet URLs from the <link> elements and inline <style> contents, then concatenates them all together into this. The upshot is that we can retire the common.css file that used to just import a bunch of static URLs and was hard to keep up-to-date.

Screenshots

A	B	C	D

[github-actions[bot]]

Size Change: -138 B (0%)

Total Size: 88.1 kB

Filename	Size	Change
dist/common.css	0 B	-297 B (removed)	🏆
dist/formio-sfds.css	14.1 kB	-161 B (-1%)
dist/formio-sfds.standalone.js	67.7 kB	+286 B (0%)
dist/portal.js	6.37 kB	+34 B (+1%)

_{compressed-size-action}

[shawnbot]

@nlsfds noted on Slack:

One thing I would also like to improve is to make links clickable with the green check if those pages are completed.

I think I've addressed this here!