Improving UI/UX and accessibility

[mengsarah]

I was looking through the branches list and I saw some-accessibility and I was like huh, didn't I delete that?

Turns out my previous pull request's branch was also named UI-improvement, which means I actually deleted UI-improvement and started some-accessibility but then left it alone for so long that I forgot some-accessibility is the new branch. Cue facepalm... I should probably adopt some kind of branch naming scheme.

Stuff done, updated June 26, 2020:

• accessibility stuff in #75
• signup page errors to top of page
• resolve #61 🔥 with the browse button and breadcrumbs
• confirmation message fixed by checking for messages everywhere (in base.html and its deprecated version)
• typos and weird capitalization and explanation of deletion
• maybe some other stuff

[50Wliu]

making use of the C in CSS

😂

[mengsarah]

making use of the C in CSS

😂

😜

Merged development into this branch to work with all the stuff that's already done.

I present to you breadcrumbs! Suggested in #61. Picked some compliant colors for now because the defaults did not mesh well at all with our background, but I know nothing about breadcrumb styling.

And after much agony, I figured out where the sign up error messages were hiding and brought them up (they're still next to the relevant form elements, too):

I manually styled that box so that it matches the one that can appear on the login page. Speaking of that, we now have two error message styles. 😅

[mengsarah]

Okay, I think that's all for now!