Add dark mode icons for social media accounts

static/icons/instagram-dark.svg

@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   viewBox="-1.5 -3 53 53"
+   version="1.1"
+   id="svg1086"
+   sodipodi:docname="instagram-dark.svg"
+   inkscape:version="1.1.1 (c3084ef, 2021-09-22)"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg">
+  <defs
+     id="defs1090" />
+  <sodipodi:namedview
+     id="namedview1088"
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1.0"
+     inkscape:pageshadow="2"
+     inkscape:pageopacity="0.0"
+     inkscape:pagecheckerboard="true"
+     showgrid="false"
+     inkscape:zoom="13.566038"
+     inkscape:cx="4.4596662"
+     inkscape:cy="27.384562"
+     inkscape:window-width="1296"
+     inkscape:window-height="969"
+     inkscape:window-x="0"
+     inkscape:window-y="25"
+     inkscape:window-maximized="0"
+     inkscape:current-layer="svg1086" />
+  <path
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+     id="path1084"
+     style="fill:#ffffff" />
+</svg>