Modify icons color

- Update icon from color "2a7fff" to "cccccc"
- Update .svg files with last Inkscape version

rtdata/icons/rawtherapee/scalable/apps/expander-open-small.svg

@@ -2,68 +2,20 @@
 <!-- Created with Inkscape (http://www.inkscape.org/) -->
 
 <svg
-   xmlns:osb="http://www.openswatchbook.org/uri/2009/osb"
-   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"
    width="16"
    height="16"
    viewBox="0 0 16 16"
    version="1.1"
    id="SVGRoot"
-   inkscape:export-filename="/tmp/template.png"
-   inkscape:export-xdpi="96"
-   inkscape:export-ydpi="96"
-   inkscape:version="0.92.2 2405546, 2018-03-11"
-   sodipodi:docname="expander-open.svg">
-  <sodipodi:namedview
-     id="base"
-     pagecolor="#E0E1E2"
-     bordercolor="#666768"
-     borderopacity="1.0"
-     inkscape:pageopacity="0"
-     inkscape:pageshadow="2"
-     inkscape:zoom="51.375"
-     inkscape:cx="8"
-     inkscape:cy="8"
-     inkscape:document-units="px"
-     inkscape:current-layer="layer1"
-     showgrid="true"
-     inkscape:window-width="1920"
-     inkscape:window-height="1019"
-     inkscape:window-x="0"
-     inkscape:window-y="0"
-     inkscape:window-maximized="1"
-     inkscape:grid-bbox="true"
-     inkscape:pagecheckerboard="false"
-     inkscape:snap-bbox="true"
-     inkscape:bbox-nodes="false"
-     inkscape:snap-others="false"
-     inkscape:object-nodes="false"
-     inkscape:snap-grids="true"
-     inkscape:snap-bbox-midpoints="true"
-     inkscape:snap-object-midpoints="false"
-     inkscape:snap-center="true"
-     inkscape:snap-text-baseline="false"
-     inkscape:snap-nodes="false"
-     inkscape:snap-bbox-edge-midpoints="false">
-    <inkscape:grid
-       type="xygrid"
-       id="grid1374"
-       originx="1"
-       originy="1"
-       empspacing="7"
-       dotted="false" />
-  </sodipodi:namedview>
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:dc="http://purl.org/dc/elements/1.1/">
   <defs
      id="defs815">
     <linearGradient
-       id="linearGradient2452"
-       osb:paint="solid">
+       id="linearGradient2452">
       <stop
          style="stop-color:#2a7fff;stop-opacity:1;"
          offset="0"
@@ -112,25 +64,11 @@
   </metadata>
   <g
      id="layer1"
-     inkscape:groupmode="layer"
-     inkscape:label="Layer 1"
      transform="translate(0,-8)">
     <path
-       sodipodi:type="star"
-       style="opacity:0.7;fill:#2a7fff;fill-opacity:0.75294118;fill-rule:nonzero;stroke:none;stroke-width:3.00691557;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;paint-order:normal"
+       style="opacity:0.7;fill:#cccccc;fill-opacity:1.0;fill-rule:nonzero;stroke:none;stroke-width:3.00691557;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;paint-order:normal"
        id="path984"
-       sodipodi:sides="3"
-       sodipodi:cx="5.6052365"
-       sodipodi:cy="16.976503"
-       sodipodi:r1="7.2111025"
-       sodipodi:r2="3.6055512"
-       sodipodi:arg1="-2.0943951"
-       sodipodi:arg2="-1.0471976"
-       inkscape:flatsided="true"
-       inkscape:rounded="0"
-       inkscape:randomized="0"
        d="M 1.9996853,10.731505 12.816339,16.976503 1.9996853,23.221501 Z"
-       transform="matrix(0,0.65244888,-0.6780646,0,19.511166,12.676186)"
-       inkscape:transform-center-y="-0.38768447" />
+       transform="matrix(0,0.65244888,-0.6780646,0,19.511166,12.676186)" />
   </g>
 </svg>