add new icons (#13)

* add new icons

source/os_linuxmint.svg

@@ -29,10 +29,10 @@
      inkscape:pageopacity="0"
      inkscape:pageshadow="2"
      inkscape:zoom="1.7718204"
-     inkscape:cx="170.44617"
+     inkscape:cx="171.01056"
      inkscape:cy="239.5841"
      inkscape:document-units="px"
-     inkscape:current-layer="g4016"
+     inkscape:current-layer="g840"
      showgrid="false"
      inkscape:window-width="1942"
      inkscape:window-height="1082"
@@ -164,7 +164,7 @@
                              inkscape:connector-curvature="0"
                              id="path3983"
                              d="m 186.53535,632.55258 v 9.25 h 22 c 5.16774,0 9.68104,-1.92738 13.34374,-5.65625 h 0.0313 c 3.11511,-3.20051 4.93243,-7.02785 5.375,-11.34375 v -5.25 h -9.34375 v 3.59375 c 0,5.14705 -4.89038,9.46875 -11.18751,9.46875 l -20.21874,-0.0625 z"
-                             style="color:#000000;display:inline;overflow:visible;visibility:visible;opacity:0.607;fill:#6d6d6d;fill-opacity:1;fill-rule:evenodd;stroke:none;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dashoffset:0;stroke-opacity:1;marker:none;marker-start:none;marker-mid:none;marker-end:none;enable-background:accumulate" />
+                             style="color:#000000;display:inline;overflow:visible;visibility:visible;opacity:0.607;fill:#c2c2c2;fill-opacity:1;fill-rule:evenodd;stroke:none;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dashoffset:0;stroke-opacity:1;marker:none;marker-start:none;marker-mid:none;marker-end:none;enable-background:accumulate" />
                         </g>
                       </g>
                     </g>