Generate session

<h2>Changes</h2>
<ul>
<li>
Changed text on login screen above the subscribe input
</li><br>
<li>
Added new routes in the face section for the generate session and join session pages
</li><br>
<li>
Created new HTML templates for the face. Used base_face.html as template and partials for the new pages. <b>To do: We should have the register pages have the same template.</b>
</li><br>
<li>
Reorganized a lot of the sass/css so it's more modular, mostly in the face section. Added folders for better organization. Starting to implement base styles in the /base folder. <b>To do: reorganize the /space css into its own folder, start implementing the base styles.</b>
</li>
</ul>