updating minvers, removing cerulean from bundled themes

package.json

@@ -41,10 +41,9 @@
     "bcryptjs": "~0.7.10",
     "nodebb-plugin-mentions": "~0.4.0",
     "nodebb-plugin-markdown": "~0.4.1",
-    "nodebb-widget-essentials": "~0.0.20",
+    "nodebb-widget-essentials": "~0.0.21",
-    "nodebb-theme-vanilla": "~0.0.18",
+    "nodebb-theme-vanilla": "~0.0.19",
-    "nodebb-theme-cerulean": "~0.0.13",
+    "nodebb-theme-lavender": "~0.0.25",
-    "nodebb-theme-lavender": "~0.0.24",
     "less": "~1.6.3",
     "daemon": "~1.1.0",
     "underscore": "^1.6.0",