Refactors most controllers and directives into classes for more organized and maintainable code

app/assets/javascripts/controllers/abstract/pure_ctrl.js

@@ -0,0 +1,28 @@
+export class PureCtrl {
+  constructor(
+    $timeout
+  ) {
+    if(!$timeout) {
+      throw 'Invalid PureCtrl construction.';
+    }
+    this.$timeout = $timeout;
+    this.state = {};
+    this.props = {};
+  }
+
+  async setState(state) {
+    return new Promise((resolve) => {
+      this.$timeout(() => {
+        this.state = Object.freeze(Object.assign({}, this.state, state));
+        resolve();
+      })
+    })
+  }
+
+  initProps(props) {
+    if (Object.keys(this.props).length > 0) {
+      throw 'Already init-ed props.';
+    }
+    this.props = Object.freeze(Object.assign({}, this.props, props));
+  }
+}