Bug 517997: use larger icons for search providers (wikipedia) [r=gavin.sharp]

mobile/locales/en-US/searchplugins/wikipedia.xml

@@ -2,7 +2,7 @@
 <ShortName>Wikipedia</ShortName>
 <Description>Wikipedia, the free encyclopedia</Description>
 <InputEncoding>UTF-8</InputEncoding>
-<Image width="16" height="16">data:image/x-icon;base64,AAABAAEAEBAQAAEABAAoAQAAFgAAACgAAAAQAAAAIAAAAAEABAAAAAAAAAAAAAAAAAAAAAAAEAAAAAAAAAAEAgQAhIOEAMjHyABIR0gA6ejpAGlqaQCpqKkAKCgoAPz9%2FAAZGBkAmJiYANjZ2ABXWFcAent6ALm6uQA8OjwAiIiIiIiIiIiIiI4oiL6IiIiIgzuIV4iIiIhndo53KIiIiB%2FWvXoYiIiIfEZfWBSIiIEGi%2FfoqoiIgzuL84i9iIjpGIoMiEHoiMkos3FojmiLlUipYliEWIF%2BiDe0GoRa7D6GPbjcu1yIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA</Image>
+<Image width="16" height="16">data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAQAAADZc7J%2FAAAACXBIWXMAAAsTAAALEwEAmpwYAAADGGlDQ1BQaG90b3Nob3AgSUNDIHByb2ZpbGUAAHjaY2BgnuDo4uTKJMDAUFBUUuQe5BgZERmlwH6egY2BmYGBgYGBITG5uMAxIMCHgYGBIS8%2FL5UBFTAyMHy7xsDIwMDAcFnX0cXJlYE0wJpcUFTCwMBwgIGBwSgltTiZgYHhCwMDQ3p5SUEJAwNjDAMDg0hSdkEJAwNjAQMDg0h2SJAzAwNjCwMDE09JakUJAwMDg3N%2BQWVRZnpGiYKhpaWlgmNKflKqQnBlcUlqbrGCZ15yflFBflFiSWoKAwMD1A4GBgYGXpf8EgX3xMw8BSMDVQYqg4jIKAUICxE%2BCDEESC4tKoMHJQODAIMCgwGDA0MAQyJDPcMChqMMbxjFGV0YSxlXMN5jEmMKYprAdIFZmDmSeSHzGxZLlg6WW6x6rK2s99gs2aaxfWMPZ9%2FNocTRxfGFM5HzApcj1xZuTe4FPFI8U3mFeCfxCfNN45fhXyygI7BD0FXwilCq0A%2FhXhEVkb2i4aJfxCaJG4lfkaiQlJM8JpUvLS19QqZMVl32llyfvIv8H4WtioVKekpvldeqFKiaqP5UO6jepRGqqaT5QeuA9iSdVF0rPUG9V%2FpHDBYY1hrFGNuayJsym740u2C%2B02KJ5QSrOutcmzjbQDtXe2sHY0cdJzVnJRcFV3k3BXdlD3VPXS8Tbxsfd99gvwT%2F%2FID6wIlBS4N3hVwMfRnOFCEXaRUVEV0RMzN2T9yDBLZE3aSw5IaUNak30zkyLDIzs%2BZmX8xlz7PPryjYVPiuWLskq3RV2ZsK%2FcqSql01jLVedVPrHzbqNdU0n22VaytsP9op3VXUfbpXta%2Bx%2F%2B5Em0mzJ%2F%2BdGj%2Ft8AyNmf2zvs9JmHt6vvmCpYtEFrcu%2BbYsc%2Fm9lSGrTq9xWbtvveWGbZtMNm%2FZarJt%2Bw6rnft3u%2B45uy9s%2F4ODOYd%2BHmk%2FJn58xUnrU%2BfOJJ%2F9dX7SRe1LR68kXv13fc5Nm1t379TfU75%2F4mHeY7En%2B59lvhB5efB1%2Flv5dxc%2BNH0y%2Ffzq64Lv4T8Ffp360%2FrP8f9%2FAA0ADzT6lvFdAAAAIGNIUk0AAHolAACAgwAA%2Bf8AAIDpAAB1MAAA6mAAADqYAAAXb5JfxUYAAAHqSURBVHjapJUxb9NQFIW%2FJAip2xNS1%2FJ%2BgoeqUqeajdGVmFgwI1OcmYEgITFG7EgJQ%2Bb2HzgbElJF%2BQU2iBl7YAFRnQ5%2BfnFcB0J8Jp%2Fr53vPu%2Bf6vYEA4JBTTjhkN%2Fzkio9kAAihpyr1v%2FijN7ovEHqiffFeDHTAdx6wL46HnPX4HM6HHNEHR0NGvRKMhvRE7wT3ACYssBggpyThIRMCAFaEzHhOiQWumfGFBQGQY0kB9EKSCsVCyKpQxUMhdOEMj4Vi91wIGX2uyNJtwTDHAgbjOUBJ%2FT50ETDAzCn0CiRpLkSd2VW1rqZR6uOpzHoWl40EkmkIlTIhNJc0bUSlSNNtCaZCKGtpyDZimXB92uhBhTEAHzx%2FBuQ8Isb62Dti16c7PahrNnbovFhXLGQaau4oqDSULDx%2FBcCl55cEDTUdCqqagWcXbjpqWD8ZWxRUGq5ZOTYhAXLHV0DU%2FqCtQLJCkZuM0PHQGThvL152JJh5M61SP2CpMpmmgdsTFDJCiaaubq0haQ7Q3xLUZq4NqzS0DNzWxNq8ksgbFmGgwf95oFgijJuB6v9L3Fx2HSg3XeExZxv1xuSEXQt%2Fo8fqg9cDHfB15zuxjRuOETrfu%2F5b9bhcf%2BmlRmLgr%2FcTgp1vqR9c8YlvALcDAPr5jIx%2B4LKcAAAAAElFTkSuQmCC</Image>
 <Url type="application/x-suggestions+json" method="GET" template="http://en.wikipedia.org/w/api.php">
   <Param name="action" value="opensearch"/>
   <Param name="search" value="{searchTerms}"/>