Large update for all components

reorganization, linting, updating file imports, consolidation
warning: there will be errors in this commit
todo: update webpack, add missing styles, scss files, consolidate the rest of components within features/*

app/javascript/gabsocial/components/column_subheading/column_subheading.js

@@ -0,0 +1,17 @@
+import './column_subheading.scss';
+
+export default class ColumnSubheading extends PureComponent {
+  static propTypes = {
+    text: PropTypes.string.isRequired,
+  };
+
+  render() {
+    const { text } = this.props;
+
+    return (
+      <div className='column-subheading'>
+        {text}
+      </div>
+    );
+  }
+};