Responsive UI improvements (#41)

* Improved responsive UX for media profiles

* Improved responsiveness for other pages

* Added docs; fixed up stragglers

lib/pinchflat_web/components/layouts/root.html.heex

@@ -12,7 +12,7 @@
     <script defer phx-track-static type="text/javascript" src={~p"/assets/app.js"}>
     </script>
   </head>
-  <body x-data="{ 'sidebarToggle': false }" class="dark text-bodydark bg-boxdark-2">
+  <body x-data="{ 'sidebarVisible': false }" class="dark text-bodydark bg-boxdark-2">
     <%= @inner_content %>
   </body>
 </html>