Modify icons color

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

rtdata/icons/rawtherapee/scalable/apps/bidirectional-arrow-horizontal-prelight.svg

@@ -1,68 +1,15 @@
 <?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"
    width="24px"
    height="24px"
    viewBox="0 0 24 24"
    version="1.1"
    id="SVGRoot"
-   inkscape:export-filename="/tmp/template.png"
-   inkscape:export-xdpi="96"
-   inkscape:export-ydpi="96"
-   inkscape:version="1.0 (4035a4fb49, 2020-05-01)"
-   sodipodi:docname="bidirectional-arrow-horizontal-prelight.svg">
-  <sodipodi:namedview
-     id="base"
-     pagecolor="#E0E1E2"
-     bordercolor="#666768"
-     borderopacity="1.0"
-     inkscape:pageopacity="0"
-     inkscape:pageshadow="2"
-     inkscape:zoom="29.288994"
-     inkscape:cx="11.864052"
-     inkscape:cy="11.292624"
-     inkscape:document-units="px"
-     inkscape:current-layer="layer1"
-     showgrid="true"
-     inkscape:window-width="1920"
-     inkscape:window-height="1041"
-     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="true"
-     inkscape:snap-others="true"
-     inkscape:object-nodes="true"
-     inkscape:snap-grids="true"
-     inkscape:snap-bbox-midpoints="true"
-     inkscape:document-rotation="0"
-     inkscape:object-paths="true"
-     inkscape:snap-nodes="true"
-     inkscape:snap-smooth-nodes="true"
-     inkscape:bbox-paths="true"
-     inkscape:snap-bbox-edge-midpoints="true"
-     inkscape:snap-intersection-paths="true"
-     inkscape:snap-midpoints="true"
-     inkscape:snap-object-midpoints="true"
-     inkscape:snap-center="true"
-     inkscape:snap-text-baseline="true"
-     inkscape:snap-page="true">
-    <inkscape:grid
-       type="xygrid"
-       id="grid1374"
-       originx="1"
-       originy="1"
-       empspacing="11"
-       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" />
   <metadata
@@ -106,21 +53,17 @@
     </rdf:RDF>
   </metadata>
   <g
-     id="layer1"
-     inkscape:groupmode="layer"
-     inkscape:label="Layer 1">
+     id="layer1">
     <path
-       style="fill:#ff6400;fill-opacity:1;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       style="fill:#ff6400;fill-opacity:1.0;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1.0"
        d="m 5.75,13.5 h 12.5 v -3 H 5.75 Z"
-       id="path857"
-       sodipodi:nodetypes="ccccc" />
+       id="path857" />
     <path
-       style="fill:#ff6400;fill-opacity:1;stroke:#000000;stroke-width:1px;stroke-linecap:square;stroke-linejoin:round;stroke-opacity:1"
+       style="fill:#ff6400;fill-opacity:1.0;stroke:#000000;stroke-width:1px;stroke-linecap:square;stroke-linejoin:round;stroke-opacity:1.0"
        d="m 6.4999667,13.5 v 2.25 l -5,-3.75 5,-3.75 v 2.25"
-       id="path853"
-       sodipodi:nodetypes="ccccc" />
+       id="path853" />
     <path
-       style="fill:#ff6400;fill-opacity:1;stroke:#000000;stroke-width:1px;stroke-linecap:square;stroke-linejoin:round;stroke-opacity:1"
+       style="fill:#ff6400;fill-opacity:1.0;stroke:#000000;stroke-width:1px;stroke-linecap:square;stroke-linejoin:round;stroke-opacity:1.0"
        d="m 17.5,13.5 v 2.25 l 5,-3.75 -5,-3.75 v 2.25"
        id="path855" />
   </g>