refactor: use de gruyter ci

frontend/static/degruyter-icons/Simple/Medium-24px/SVG/Access/Open-Access-MD.svg

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg width="24px" height="24px" viewBox="0 0 24 24" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+    <title>🧩 Icons/Simple/Access/24px/Open-Access-MD</title>
+    <g id="🧩-Icons/Simple/Access/24px/Open-Access-MD" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
+        <path d="M12,2 C14.8270145,2 17.132132,4.23451296 17.245621,7.03372506 L17.25,7.25013472 L17.2509599,11.8589456 C17.8830358,12.8356864 18.25,13.9999887 18.25,15.25 C18.25,18.7017797 15.4517797,21.5 12,21.5 C8.54822031,21.5 5.75,18.7017797 5.75,15.25 C5.75,11.7982203 8.54822031,9 12,9 C13.1908326,9 14.3038793,9.33304059 15.2510797,9.91106119 L15.25,7.25013472 C15.25,5.45512778 13.7949183,4 12,4 C10.2669754,4 8.85075455,5.35650438 8.75514481,7.06570248 L8.75,7.25013472 L8.75,7.97592058 L6.75,7.97592058 L6.75,7.25013472 C6.75,4.35057247 9.10049797,2 12,2 Z M12,11 C9.65278981,11 7.75,12.9027898 7.75,15.25 C7.75,17.5972102 9.65278981,19.5 12,19.5 C14.3472102,19.5 16.25,17.5972102 16.25,15.25 C16.25,12.9027898 14.3472102,11 12,11 Z M12,13.5 C12.9664983,13.5 13.75,14.2835017 13.75,15.25 C13.75,16.2164983 12.9664983,17 12,17 C11.0335017,17 10.25,16.2164983 10.25,15.25 C10.25,14.2835017 11.0335017,13.5 12,13.5 Z" id="Primary" fill="#000000"></path>
+    </g>
+</svg>