Index: trunk/resources/images/invert_selection.svg
===================================================================
--- trunk/resources/images/invert_selection.svg	(revision 16704)
+++ trunk/resources/images/invert_selection.svg	(revision 16704)
@@ -0,0 +1,78 @@
+<?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"
+   version="1.1"
+   width="24px"
+   height="24px"
+   id="svg6"
+   sodipodi:docname="invert_selection2.svg"
+   inkscape:version="0.92.3 (2405546, 2018-03-11)">
+  <metadata
+     id="metadata12">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <defs
+     id="defs10" />
+  <sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="1680"
+     inkscape:window-height="987"
+     id="namedview8"
+     showgrid="true"
+     inkscape:zoom="31.766276"
+     inkscape:cx="10.576271"
+     inkscape:cy="12"
+     inkscape:window-x="-8"
+     inkscape:window-y="-8"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="svg6">
+    <inkscape:grid
+       type="xygrid"
+       id="grid828" />
+  </sodipodi:namedview>
+  <path
+     d="M 3.3535534,20.646447 21.353553,2.6464473"
+     id="path2-6"
+     style="fill:none;stroke:#ffffff"
+     inkscape:connector-curvature="0"
+     sodipodi:nodetypes="cc" />
+  <path
+     d="m 6,5 7,6 2,8"
+     id="path2"
+     inkscape:connector-curvature="0"
+     style="fill:none;stroke:#000000"
+     sodipodi:nodetypes="ccc" />
+  <path
+     d="m 1.5,19.5 h 3 v 3 h -3 z m 18,-18.0000006 h 3 v 3 h -3 z"
+     id="path4-7"
+     inkscape:connector-curvature="0"
+     style="fill:#ffffff;stroke:#cccccc"
+     sodipodi:nodetypes="cccccccccc" />
+  <path
+     d="m 4.5,3.5 h 3 v 3 h -3 z m 7,6 h 3 v 3 h -3 z m 2,8 h 3 v 3 h -3 z"
+     id="path4"
+     inkscape:connector-curvature="0"
+     style="fill:#c4c4c4;stroke:#ab3217"
+     sodipodi:nodetypes="ccccccccccccccc" />
+</svg>