refactor: use de gruyter ci

frontend/static/degruyter-icons/Simple/Medium-24px/SVG/Action/Share-This-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/Action/24px/Share-This-MD</title>
+    <g id="🧩-Icons/Simple/Action/24px/Share-This-MD" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
+        <path d="M11.9982006,3 L11.9982006,8.29411765 C19.6433687,8.29411765 22.9056808,12.3484151 21.7851369,20.45701 C19.775625,17.4401738 15.625,15.3088235 12,15.8571429 C12.0002271,15.8570408 11.9992139,15.8570918 11.9982006,15.8571429 L11.9982006,21 L2,12.0756303 L11.9982006,3 Z M9.998,7.5287395 L5.003,12.062521 L9.998,16.5216807 L9.99820064,13.9385996 L10.4645132,13.8552881 C12.1649753,13.5765108 13.762581,13.5914148 15.2573304,13.9 C17.7032839,14.4049576 19.1109867,15.4844949 19.737156,15.949169 L19.737156,15.949169 L19.942,16.1062185 L19.9153088,15.8788068 L19.877966,15.6238892 C19.2992695,12.0160272 16.8504312,10.3811752 12.2984994,10.313144 L12.2984994,10.313144 L11.9982006,10.3109244 L9.99820064,10.3109244 L9.998,7.5287395 Z" id="Primary" fill="#000000"></path>
+    </g>
+</svg>