refactor: use de gruyter ci

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

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg width="41px" height="16px" viewBox="0 0 41 16" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+    <title>🧩 Icons/Simple/Action/16px/Download/Download-ZIP-SM</title>
+    <g id="🧩-Icons/Simple/Action/16px/Download/Download-ZIP-SM" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
+        <g id="Icon-Group" transform="translate(1.000000, 0.000000)" fill="#000000">
+            <g id="Primary" transform="translate(24.000000, 0.000000)">
+                <path d="M15,14 L15,16 L1,16 L1,14 L15,14 Z M10,0 L10,6 L15,6 L8.01565996,12 L1,6 L6,6 L6,0 L10,0 Z"></path>
+            </g>
+            <path d="M8.036,12.8 L8.036,11.274 L2.24,11.274 L8.036,4.274 L8.036,3 L0.182,3 L0.182,4.526 L5.782,4.526 L4.38760139e-13,11.526 L4.38760139e-13,12.8 L8.036,12.8 Z M11.800353,12.8 L11.800353,3 L10.078353,3 L10.078353,12.8 L11.800353,12.8 Z M15.942706,12.8 L15.942706,9.65 L17.888706,9.65 C20.044706,9.65 21.808706,8.502 21.808706,6.304 L21.808706,6.276 C21.808706,4.302 20.380706,3 18.084706,3 L14.220706,3 L14.220706,12.8 L15.942706,12.8 Z M17.944706,8.096 L15.942706,8.096 L15.942706,4.568 L17.944706,4.568 C19.232706,4.568 20.058706,5.17 20.058706,6.318 L20.058706,6.346 C20.058706,7.368 19.246706,8.096 17.944706,8.096 Z" id="Primary"></path>
+        </g>
+    </g>
+</svg>