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/i18n/ce.json

@@ -4,6 +4,7 @@
             "Умар"
         ]
     },
+    "uls-select-language": "Мотт харжар",
     "uls-region-WW": "Дерригдуьненан",
     "uls-region-AS": "Ази",
     "uls-region-ME": "Гергара Малхбале",