Get rid of the Synopsis images

[willeM_ Van Onsem]

The synopsis images can be reproduced with simple HTML that will result in a vectorized variant, and more easier to change based on a state. This can be done with the following CSS:

#synopsis summary {
  display: block;
  float: right;
  color: #536371;
  margin: 0px;
  padding: 5px;
  background: rgb(250,247,224);
  writing-mode: vertical-rl;
  rotate: 180deg;
}
#synopsis summary::after {
  content: "\2A20";
  rotate: -90deg;
  display: inline-block;
  color: #b0b0af;
}
#synopsis details[open] summary::after {
    rotate: 90deg;
}

and remove the #synopsis details[open] > summary specifier.