Modify icons color

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

rtdata/icons/rawtherapee/scalable/apps/spot-prelight.svg

@@ -2,39 +2,17 @@
 <!-- Created with Inkscape (http://www.inkscape.org/) -->
 
 <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="11"
    height="11"
    id="svg2"
    version="1.1"
-   inkscape:version="0.48.4 r9939"
-   sodipodi:docname="spot-prelight.svg">
+   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="defs4" />
-  <sodipodi:namedview
-     id="base"
-     pagecolor="#a94a4a"
-     bordercolor="#666666"
-     borderopacity="1.0"
-     inkscape:pageopacity="0"
-     inkscape:pageshadow="2"
-     inkscape:zoom="22.627417"
-     inkscape:cx="1.6872889"
-     inkscape:cy="2.4074225"
-     inkscape:document-units="px"
-     inkscape:current-layer="layer1"
-     showgrid="false"
-     inkscape:window-width="1920"
-     inkscape:window-height="1025"
-     inkscape:window-x="-2"
-     inkscape:window-y="-3"
-     inkscape:window-maximized="1" />
   <metadata
      id="metadata7">
     <rdf:RDF>
@@ -48,8 +26,6 @@
     </rdf:RDF>
   </metadata>
   <g
-     inkscape:label="Layer 1"
-     inkscape:groupmode="layer"
      id="layer1"
      transform="translate(0,-1041.3622)">
     <path
@@ -57,7 +33,7 @@
        d="m 6,1043.3622 0,4 -4,0 0,1 4,0 0,4 1,0 0,-4 4,0 0,-1 -4,0 0,-4 -1,0 z"
        id="rect2987" />
     <rect
-       style="fill:#ffffff;fill-opacity:1;stroke:none"
+       style="fill:#ffffff;fill-opacity:1.0;stroke:none"
        id="rect2985"
        width="9"
        height="1"
@@ -69,6 +45,6 @@
        height="9"
        width="1"
        id="rect2989"
-       style="fill:#ffffff;fill-opacity:1;stroke:none" />
+       style="fill:#ffffff;fill-opacity:1.0;stroke:none" />
   </g>
 </svg>