Scaffold out basic transactions model and UI (#478)

* Transaction scaffold

* Rough in transaction views

* Fix sort order

* Fix mass assignment issue

* Fix test

* Simplify CI workflow

* Don't seed db before test

app/javascript/controllers/tabs_controller.js

@@ -0,0 +1,33 @@
+import { Controller } from "@hotwired/stimulus";
+
+// Connects to data-controller="tabs"
+export default class extends Controller {
+  static classes = ["active"];
+  static targets = ["btn", "tab"];
+  static values = { defaultTab: String };
+
+  connect() {
+    const defaultTab = this.defaultTabValue;
+    this.tabTargets.forEach((tab) => {
+      if (tab.id === defaultTab) {
+        tab.hidden = false;
+        this.btnTargets
+          .find((btn) => btn.dataset.id === defaultTab)
+          .classList.add(...this.activeClasses);
+      } else {
+        tab.hidden = true;
+      }
+    });
+  }
+
+  select(event) {
+    const selectedTabId = event.currentTarget.dataset.id;
+    this.tabTargets.forEach((tab) => (tab.hidden = tab.id !== selectedTabId));
+    this.btnTargets.forEach((btn) =>
+      btn.classList.toggle(
+        ...this.activeClasses,
+        btn.dataset.id === selectedTabId
+      )
+    );
+  }
+}