📦 NEW: add icon for boosting

Signed-off-by: Jonas Sulzer <jonas@violoncello.ch>

css/style.scss

@@ -1,2 +1,3 @@
 @include icon-black-white('reply', 'social', 1);
+@include icon-black-white('boost', 'social', 1);
 @include icon-black-white('emoji', 'social', 1);

img/boost.svg

@@ -0,0 +1,55 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   height="16"
+   width="16"
+   version="1.1"
+   id="svg4"
+   sodipodi:docname="boost.svg"
+   inkscape:version="0.92.3 (2405546, 2018-03-11)">
+  <metadata
+     id="metadata10">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <defs
+     id="defs8" />
+  <sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="1920"
+     inkscape:window-height="1010"
+     id="namedview6"
+     showgrid="false"
+     inkscape:zoom="41.7193"
+     inkscape:cx="7.4337412"
+     inkscape:cy="9.2709945"
+     inkscape:window-x="0"
+     inkscape:window-y="34"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="svg4" />
+  <path
+     d="M 3,2 6,5 H 4 v 7 h 5 v 2 H 2 V 5 H 0 Z m 4,0 h 7 v 9 h 2 l -3,3 -3,-3 h 2 V 4 H 7 Z"
+     id="path2"
+     inkscape:connector-curvature="0"
+     style="stroke-width:0.5"
+     sodipodi:nodetypes="cccccccccccccccccccc" />
+</svg>