minor color and layout changes in admin interface

website/static/img/admin/icon-calendar.svg

@@ -0,0 +1,9 @@
+<svg width="16" height="32" viewBox="0 0 1792 3584" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+  <defs>
+    <g id="icon">
+      <path d="M192 1664h288v-288h-288v288zm352 0h320v-288h-320v288zm-352-352h288v-320h-288v320zm352 0h320v-320h-320v320zm-352-384h288v-288h-288v288zm736 736h320v-288h-320v288zm-384-736h320v-288h-320v288zm768 736h288v-288h-288v288zm-384-352h320v-320h-320v320zm-352-864v-288q0-13-9.5-22.5t-22.5-9.5h-64q-13 0-22.5 9.5t-9.5 22.5v288q0 13 9.5 22.5t22.5 9.5h64q13 0 22.5-9.5t9.5-22.5zm736 864h288v-320h-288v320zm-384-384h320v-288h-320v288zm384 0h288v-288h-288v288zm32-480v-288q0-13-9.5-22.5t-22.5-9.5h-64q-13 0-22.5 9.5t-9.5 22.5v288q0 13 9.5 22.5t22.5 9.5h64q13 0 22.5-9.5t9.5-22.5zm384-64v1280q0 52-38 90t-90 38h-1408q-52 0-90-38t-38-90v-1280q0-52 38-90t90-38h128v-96q0-66 47-113t113-47h64q66 0 113 47t47 113v96h384v-96q0-66 47-113t113-47h64q66 0 113 47t47 113v96h128q52 0 90 38t38 90z"/>
+    </g>
+  </defs>
+  <use xlink:href="#icon" x="0" y="0" fill="#d9230f" />
+  <use xlink:href="#icon" x="0" y="1792" fill="#91170a" />
+</svg>

website/static/img/admin/icon-clock.svg

@@ -0,0 +1,9 @@
+<svg width="16" height="32" viewBox="0 0 1792 3584" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+  <defs>
+    <g id="icon">
+      <path d="M1024 544v448q0 14-9 23t-23 9h-320q-14 0-23-9t-9-23v-64q0-14 9-23t23-9h224v-352q0-14 9-23t23-9h64q14 0 23 9t9 23zm416 352q0-148-73-273t-198-198-273-73-273 73-198 198-73 273 73 273 198 198 273 73 273-73 198-198 73-273zm224 0q0 209-103 385.5t-279.5 279.5-385.5 103-385.5-103-279.5-279.5-103-385.5 103-385.5 279.5-279.5 385.5-103 385.5 103 279.5 279.5 103 385.5z"/>
+    </g>
+  </defs>
+  <use xlink:href="#icon" x="0" y="0" fill="#d9230f" />
+  <use xlink:href="#icon" x="0" y="1792" fill="#91170a" />
+</svg>