optimize svg with svgcleaner

src/webui/www/private/images/handle-icon-horizontal.svg

@@ -1,5 +1 @@
-<svg xmlns="http://www.w3.org/2000/svg" width="20" height="8">
+<svg height="8" width="20" xmlns="http://www.w3.org/2000/svg"><g fill="#999"><circle cx="6" cy="4" r="1"/><circle cx="10" cy="4" r="1"/><circle cx="14" cy="4" r="1"/></g></svg>
-    <circle cx="6" cy="4" r="1" fill="#999" />
-    <circle cx="10" cy="4" r="1" fill="#999" />
-    <circle cx="14" cy="4" r="1" fill="#999" />
-</svg>

src/webui/www/private/images/handle-icon.svg

@@ -1,5 +1 @@
-<svg xmlns="http://www.w3.org/2000/svg" width="8" height="20">
+<svg height="20" width="8" xmlns="http://www.w3.org/2000/svg"><g fill="#999"><circle cx="4" cy="6" r="1"/><circle cx="4" cy="10" r="1"/><circle cx="4" cy="14" r="1"/></g></svg>
-    <circle cx="4" cy="6" r="1" fill="#999" />
-    <circle cx="4" cy="10" r="1" fill="#999" />
-    <circle cx="4" cy="14" r="1" fill="#999" />
-</svg>

src/webui/www/private/images/toolbox-divider.svg

@@ -1,4 +1 @@
-<svg xmlns="http://www.w3.org/2000/svg" width="2" height="20">
+<svg height="20" width="2" xmlns="http://www.w3.org/2000/svg"><path d="m0 0h1v20h-1z" fill="#fff"/><path d="m1 0h1v20h-1z" fill="#c4c4c4"/></svg>
-    <path fill="#fff" d="M0 0h1v20H0z" />
-    <path fill="#c4c4c4" d="M1 0h1v20H1z" />
-</svg>