Update jquery.uls from upstream

Upstream: https://github.com/wikimedia/jquery.uls
Changes:
* Optimize all SVGs.
* Bug 60815: Add rwr and ota to the languages supported by ULS.
* Drop -moz-linear-gradient for images.
* Localisation updates from https://translatewiki.net.

Change-Id: I3455db4ec0b9ffd8f0a29d41e8ef56309e9c59d2

lib/jquery.uls/images/close.svg

@@ -1,48 +1 @@
-<?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>
+<?xml version="1.0" encoding="UTF-8"?><svg xmlns="http://www.w3.org/2000/svg" width="13.592" height="13.592"><g transform="translate(-578.659 -309.301)" fill="#555"><rect width="3.204" height="16.018" x="188.862" y="629.484" transform="rotate(-45)"/><rect width="3.204" height="16.018" x="-639.095" y="182.455" transform="matrix(-.707 -.707 .707 -.707 0 0)"/></g></svg>