Move users page to sections

We want to create the users "page" via a `createPage` call so that we can use it /users/:username URLs. When this was located within the `/pages` directory gatsby automatically created a page at `/users` which loaded fine, but the `createPage` functionality was lost (i.e. /users/userName wouldn't load). By moving this file gatsby no longer automatically creates a URL for it and we get back our desired behaviour via `createPage`.

static-site/gatsby-node.js

@@ -184,7 +184,7 @@ exports.createPages = ({graphql, actions}) => {
         createPage({
           path: "/users",
           matchPath: "/users/*",
-          component: path.resolve("src/pages/users.jsx")
+          component: path.resolve("src/sections/users.jsx")
         });
       })
     );