refactor: use de gruyter ci

frontend/static/degruyter-icons/Simple/Small-16px/SVG/Action/Language-SM.svg

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg width="16px" height="16px" viewBox="0 0 16 16" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+    <title>🧩 Icons/Simple/Action/16px/Language-SM</title>
+    <g id="🧩-Icons/Simple/Action/16px/Language-SM" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
+        <path d="M11.3589041,5 L16,16 L13.9606164,16 L12.9150685,13.4230496 L12.742,13 L8.212,13 L7.92065904,13.7149339 L6.98047945,16 L5,16 L9.64109589,5 L11.3589041,5 Z M10.469863,7.29361702 L9.84511025,8.80306697 L8.935,11 L12.017,11 L11.4796143,9.71309034 L10.469863,7.29361702 Z M6,0 L6,1 L10,1 L10,3 L8.60015526,3.00134786 C8.2267092,4.65233459 7.57348483,6.10411269 6.63928598,7.34971117 C6.36924869,7.70976089 6.08049293,8.04619597 5.77321979,8.35887202 C6.11867507,8.65490732 6.48464014,8.93420804 6.87108753,9.19651091 L6.1781158,10.836148 C5.54881338,10.430326 4.96263831,9.98451202 4.4199932,9.49877021 C3.86915213,9.88310166 3.2721013,10.2098529 2.63200308,10.4785662 L2.28214652,10.6180359 L1.71642544,9.12138642 C2.28227652,8.90749942 2.80798321,8.64358481 3.29435773,8.32905937 C2.52642122,7.36340986 1.86997246,6.10938557 1.31563949,4.56751203 L1.17,4.14883437 L2.82857196,3.59058796 C3.34968982,5.13884952 3.95982741,6.34796399 4.64813551,7.22000828 C4.90063515,6.96244537 5.1371731,6.68586167 5.35928598,6.38971117 C6.0883919,5.41756993 6.62029616,4.28983239 6.95408351,3.0011648 L0,3 L0,1 L4,1 L4,0 L6,0 Z" id="Primary" fill="#000000"></path>
+    </g>
+</svg>