Merge a17t-redesign, kinda ts-ify setup.js

the web ui has been redesigned with the a17t toolkit, which imo looks a
lot better than bootstrap. This also brought a complete rework of the
web code, which now makes a lot more sense hopefully. the setup page is
still stuck with bootstrap, its not much of a priority but i'll rewrite
it eventually.

README.md.old

@@ -0,0 +1,38 @@
+This branch is for experimenting with [a17t](https://a17t.miles.land/) to replace bootstrap. Page structure is pretty much done (except setup.html), so i'm currently integrating this with the main app and existing web code.
+
+#### todo
+**general**
+* [x] modal implementation
+* [x] animations
+* [x] utilities
+* [x] CSS for light & dark
+
+**admin**
+* [x] invites tab
+* [x] accounts tab
+* [x] settings tab
+* [x] modals
+* [ ] integration with existing code
+
+**invites**
+* [x] page design
+* [ ] integration with existing code
+
+#### screenshots
+##### dark
+<p>
+    <img src="images/dark/invites.png" alt="invites" style="width: 32%; height: auto;">
+    <img src="images/dark/accounts.png" alt="accounts" style="width: 32%; height: auto;">
+    <img src="images/dark/settings.png" alt="settings" style="width: 32%; height: auto;">
+    <img src="images/dark/login-modal.png" alt="login modal" style="width: 32%; height: auto;">
+    <img src="images/dark/modify-settings.png" alt="modify user settings modal" style="width: 32%; height: auto;">
+</p>
+
+##### light
+<p>
+    <img src="images/light/invites.png" alt="invites" style="width: 32%; height: auto;">
+    <img src="images/light/accounts.png" alt="accounts" style="width: 32%; height: auto;">
+    <img src="images/light/settings.png" alt="settings" style="width: 32%; height: auto;">
+    <img src="images/light/login-modal.png" alt="login modal" style="width: 32%; height: auto;">
+    <img src="images/light/modify-settings.png" alt="modify user settings modal" style="width: 32%; height: auto;">
+</p>