Eliminate orphaned external message files on startup

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package.json

@@ -63,6 +63,7 @@
     "firstline": "^1.2.1",
     "form-data": "^2.3.2",
     "fs-extra": "^5.0.0",
+    "glob": "^7.1.2",
     "google-libphonenumber": "^3.0.7",
     "got": "^8.2.0",
     "intl-tel-input": "^12.1.15",
@@ -119,7 +120,6 @@
     "eslint-plugin-mocha": "^4.12.1",
     "eslint-plugin-more": "^0.3.1",
     "extract-zip": "^1.6.6",
-    "glob": "^7.1.2",
     "grunt": "^1.0.1",
     "grunt-cli": "^1.2.0",
     "grunt-contrib-concat": "^1.0.1",