Adding SVG version of icons and map for ULS

SVG versions of the icons used in the ULs has been added and
the CSS has been modified so that the png fallback is supported by old browsers.

images/clear.svg

@@ -0,0 +1,44 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- 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"
+   version="1.1"
+   width="12.520475"
+   height="12.52047"
+   id="svg2">
+  <defs
+     id="defs4" />
+  <metadata
+     id="metadata7">
+    <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>
+  <rect
+     width="1.6884073"
+     height="16.018188"
+     x="-0.84419048"
+     y="0.84421676"
+     transform="matrix(0.70710678,-0.70710678,0.70710678,0.70710678,0,0)"
+     id="rect9372-5-6-44-7-7-7-4"
+     style="fill:#555555;fill-opacity:1;stroke:none" />
+  <rect
+     width="1.6884073"
+     height="16.018188"
+     x="8.0091028"
+     y="-8.0090809"
+     transform="matrix(0.70710678,0.70710678,-0.70710678,0.70710678,0,0)"
+     id="rect9372-5-6-44-7-7-7-4-0"
+     style="fill:#555555;fill-opacity:1;stroke:none" />
+</svg>

images/close.svg

@@ -0,0 +1,48 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- 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"
+   version="1.1"
+   width="13.591901"
+   height="13.591884"
+   id="svg2">
+  <defs
+     id="defs4" />
+  <metadata
+     id="metadata7">
+    <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>
+  <g
+     transform="translate(-578.6585,-309.30142)"
+     id="layer1">
+    <rect
+       width="3.2036376"
+       height="16.018188"
+       x="188.86241"
+       y="629.48431"
+       transform="matrix(0.70710678,-0.70710678,0.70710678,0.70710678,0,0)"
+       id="rect9372-4-9-5-4-0"
+       style="fill:#555555;fill-opacity:1;stroke:none" />
+    <rect
+       width="3.2036376"
+       height="16.018188"
+       x="-639.09521"
+       y="182.45512"
+       transform="matrix(-0.70710678,-0.70710678,0.70710678,-0.70710678,0,0)"
+       id="rect9372-5-6-44-7-7-7"
+       style="fill:#555555;fill-opacity:1;stroke:none" />
+  </g>
+</svg>

images/search.svg

@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- 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"
+   version="1.1"
+   width="32"
+   height="32.000031"
+   id="svg2">
+  <defs
+     id="defs4" />
+  <metadata
+     id="metadata7">
+    <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>
+  <g
+     transform="translate(-576.51154,-295.86765)"
+     id="layer1">
+    <path
+       d="m 579.88857,299.24469 c 4.50273,-4.50274 11.80568,-4.50272 16.3085,6e-5 4.07216,4.07223 4.41687,10.42533 1.12323,14.93559 l 11.19124,11.19116 -2.49615,2.49618 -11.19125,-11.19116 c -4.51016,3.29363 -10.86328,2.9491 -14.93549,-1.12339 -4.50281,-4.50264 -4.50279,-11.80558 -8e-5,-16.30844 z m 2.12176,2.12187 c -3.34229,3.34214 -3.38386,8.76418 -0.0416,12.10657 3.34232,3.34223 8.80592,3.34224 12.1482,-2e-5 3.34223,-3.34239 3.30056,-8.76429 -0.0417,-12.10668 -3.3422,-3.34213 -8.72263,-3.34213 -12.06491,1.3e-4 z"
+       id="path3017-6-34-0"
+       style="fill:#555555;fill-opacity:1;stroke:none" />
+  </g>
+</svg>