icon.svg réécrit à la main + favicon fond cercle blanc

Implémente https://github.com/marienfressinaud/FreshRSS/issues/382
Suite de https://github.com/marienfressinaud/FreshRSS/commit/1d3ff88

https://github.com/marienfressinaud/FreshRSS/issues/264#issuecomment-29618845
Contribue à https://github.com/marienfressinaud/FreshRSS/issues/341

convert -background none favicon.svg \( -clone 0 -resize 16x16 \) \(
-clone 0 -resize 64x64 \) -delete 0 favicon.ico

convert -background none favicon.svg -resize 256x256 favicon-256.png

pngcrush -brute -l 9 -reduce -d crush/ *.png

p/themes/icons/favicon.svg

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 256">
+	<title>Logo FreshRSS</title>
+
+	<circle fill="#FFF" cx="128" cy="128" r="128"/>
+
+	<circle fill="#0062BE" cx="128" cy="128" r="33"/>
+
+	<g fill="none" stroke="#0062BE" stroke-width="24">
+		<g stroke-opacity="0.3">
+			<path d="M12,128 A116,116 0 1,1 128,244"/>
+			<path d="M54,128 A74,74 0 1,1 128,202"/>
+		</g>
+		<path d="M128,12 A116,116 0 0,1 244,128"/>
+		<path d="M128,54 A74,74 0 0,1 202,128"/>
+	</g>
+</svg>

p/themes/icons/icon.svg

@@ -1,213 +1,15 @@
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+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 256">
+	<title>Logo FreshRSS</title>
 
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 </svg>