upgrade libs to fix #281

* codemirror

package.json

@@ -61,7 +61,7 @@
     "body-parser": "^1.18.2",
     "bootstrap-sass": "~3.3.6",
     "check-node-version": "^3.1.1",
-    "codemirror": "^5.33.0",
+    "codemirror": "^5.36.0",
     "connect-flash": "~0.1.1",
     "connect-redis": "^3.3.0",
     "cookie-parser": "^1.4.3",

yarn.lock

@@ -1533,9 +1533,9 @@ code-point-at@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/code-point-at/-/code-point-at-1.1.0.tgz#0d070b4d043a5bea33a2f1a40e2edb3d9a4ccf77"
 
-codemirror@^5.33.0:
-  version "5.33.0"
-  resolved "https://registry.yarnpkg.com/codemirror/-/codemirror-5.33.0.tgz#462ad9a6fe8d38b541a9536a3997e1ef93b40c6a"
+codemirror@^5.36.0:
+  version "5.36.0"
+  resolved "https://registry.yarnpkg.com/codemirror/-/codemirror-5.36.0.tgz#1172ad9dc298056c06e0b34e5ccd23825ca15b40"
 
 color-convert@^1.3.0, color-convert@^1.9.0:
   version "1.9.1"