Remove the width attribute to preserve logo aspect ratio

See also: #483

templates/base.html

@@ -78,7 +78,6 @@
                 <img
                     id="logo"
                     height="50"
-                    width="59"
                     src="{% static 'img/logo.png'%}"
                     srcset="{% static 'img/logo.png'%} 1x, {% static 'img/[email protected]'%} 2x"
                     alt="{{ site_name }}">
@@ -86,7 +85,6 @@
                 <img
                     id="logo"
                     height="50"
-                    width="200"
                     src="{% static 'img/logo-full.png'%}"
                     srcset="{% static 'img/logo-full.png'%} 1x, {% static 'img/[email protected]'%} 2x"
                     alt="{{ site_name }}">