Bump codemirror.

Fixes selections not showing in chrome / brave.

bower.json

@@ -23,7 +23,7 @@
         "amber": ">=0.19.0",
         "amber-contrib-web": ">=0.5.0",
         "jquery-ui": ">=1.9.2",
-        "codemirror": "^5.10.0",
+        "codemirror": "^5.25.2",
         "require-css": "^0.1.2"
     },
     "devDependencies": {