Small fixes, square icon

assets/svg/license_info.json

@@ -1281,6 +1281,14 @@
       "https://commons.wikimedia.org/wiki/File:OOjs_UI_icon_language-ltr.svg"
     ]
   },
+  {
+    "path": "triangle.svg",
+    "license": "CC0",
+    "authors": [
+      "Robin van der Linde"
+    ],
+    "sources": []
+  },
   {
     "path": "up.svg",
     "license": "CC0; trivial",

assets/svg/triangle.svg

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+        style="fill:none"
+        version="1.1"
+        viewBox="0 0 100 100"
+        height="100"
+        width="100">
+        <polygon style="fill:#000000;fill-opacity:1" points="50,0 0,100 100,100" />
+</svg>