fix(package): update ckeditor to version 4.7.1

Closes #89

Author: greenkeeper[bot]

package.json

@@ -24,7 +24,7 @@
     "bootstrap": "4.0.0-alpha.4",
     "chart.js": "^2.4.0",
     "chartist": "^0.10.1",
-    "ckeditor": "4.6.2",
+    "ckeditor": "4.7.1",
     "core-js": "^2.4.1",
     "easy-pie-chart": "^2.1.7",
     "font-awesome": "^4.6.3",