Add custom WikiLove heart icon

Requires I7188a3ee318db80484037733ab058a5a0b42d732 for support for the
replacement with the icon on desktop, as otherwise we can't tell if we're
correctly heeding the configuration setting there.

Removing as a depends-on because we still need this for mobile regardless.

Bug: T173219
Change-Id: I6ee0b6d94d96ee359321b203f235b2d25f06cea6

resources/extensions/WikiLove.icon.less

@@ -0,0 +1,18 @@
+@import '../variables.less';
+
+@media screen {
+	// Only apply icon if setting enabled
+	@media ( min-width: @desktop-small-floor ) {
+		#ca-wikilove.icon a {
+			.ca-icon();
+			.background-image-svg( '../images/heart-grey.svg', '../images/heart-grey.png' );
+		}
+	}
+
+	@media ( max-width: @mobile-width ) {
+		#ca-wikilove a {
+			.ca-icon();
+			.background-image-svg( '../images/heart-grey.svg', '../images/heart-grey.png' );
+		}
+	}
+}

resources/images/heart-grey.svg

@@ -0,0 +1,54 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<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"
+   id="svg12"
+   version="1.1"
+   viewBox="0 0 20 20"
+   height="20"
+   width="20">
+  <metadata
+     id="metadata18">
+    <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>
+  <defs
+     id="defs16">
+    <linearGradient
+       gradientTransform="matrix(1,0,0,-1,-88,-92)"
+       y2="-105.4655"
+       x2="102.5057"
+       y1="-94.708504"
+       x1="93.4795"
+       gradientUnits="userSpaceOnUse"
+       id="SVGID_1_">
+      <stop
+         id="stop2"
+         style="stop-color:#F39C9C"
+         offset="0" />
+      <stop
+         id="stop4"
+         style="stop-color:#E97F7F"
+         offset="0.5757" />
+      <stop
+         id="stop6"
+         style="stop-color:#E36666"
+         offset="0.8252" />
+    </linearGradient>
+  </defs>
+  <path
+     id="path22"
+     d="m 9.46,15.201246 c -4.747,-3.767 -5.05,-4.051 -5.105,-4.109 -1.351,-1.449 -1.351,-3.801 0,-5.245 0.636,-0.681 1.545,-1.07 2.493,-1.07 0.948,0 1.855,0.389 2.493,1.069 l 0.659,0.596 0.702,-0.637 c 0.629,-0.676 1.509,-1.06 2.452,-1.06 0.941,0 1.825,0.392 2.491,1.101 1.351,1.445 1.351,3.798 0,5.244 -0.06,0.062 -0.356,0.341 -5.106,4.11 l -0.539,0.43 z"
+     stroke-miterlimit="10"
+     style="fill:none;stroke:#aaaaaa;stroke-width:2.25;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1" />
+</svg>

skin.json

@@ -91,7 +91,8 @@
 			"+ext.visualEditor.desktopArticleTarget.noscript": "resources/extensions/VisualEditor.article.less",
 			"+ext.CodeMirror.visualEditor.init": "resources/extensions/VisualEditor.CodeMirror.less",
 			"+ext.dismissableSiteNotice.styles": "resources/extensions/DismissableSiteNotice.less",
-			"+ext.MWOAuth.AuthorizeForm": "resources/extensions/MWOAuth.AuthorizeForm.less"
+			"+ext.MWOAuth.AuthorizeForm": "resources/extensions/MWOAuth.AuthorizeForm.less",
+			"+ext.wikiLove.icon": "resources/extensions/WikiLove.icon.less"
 		}
 	},
 	"AutoloadClasses": {