Fix Autheo call in order to authenticate a user from the UI.
Fix sign-in template in order to remove HTML table tags and improve the rendering of success and error messages.
Fix register template in order to remove HTML table tags.
Separate default menu bar from index.html. Create a new users menu bar.
Add the logic needed to change the menu bar if the user is authenticated.
Merge branch 'feature-change-menu-bar-on-login'. Closes #6.