dashboard: use webpack for builds; use tailwindcss instead of bulma; all sorts of tweaks

dashboard/src/components/Tab.vue

@@ -0,0 +1,11 @@
+<template>
+  <li class="py-2 px-4 hover:text-gray-200" :class="{'pb-1 border-b border-gray-400 text-gray-200': active, 'text-gray-500': !active}">
+    <slot></slot>
+  </li>
+</template>
+
+<script lang="ts">
+  export default {
+    props: ["active"],
+  };
+</script>