V0.3.2: Improved admin UI and performance galore

This commit fixes a plethora of bugs related to the admin UI, as well as
dramatically improving the performance of in-place editing. Furthermore,
several server bugs and misc bugs have been fixed. The admin UI is now
entirely client side when adding, deleting, or editng a category or
link. Other internal improvements hasve also been made.

postcss.config.js

@@ -0,0 +1,16 @@
+import { purgeCSSPlugin } from "@fullhuman/postcss-purgecss";
+import postcssPresetEnv from "postcss-preset-env";
+import cssnano from "cssnano";
+
+export default {
+    plugins: [
+        purgeCSSPlugin({
+            content: ["./src/**/*.hbs", "./src/**/*.js"],
+        }),
+        postcssPresetEnv({
+            browsers: "last 4 versions",
+            autoprefixer: {},
+        }),
+        cssnano,
+    ],
+};