Vega upgrade scripts (#657)

* add script to update vega

* add glob

* add remove-vega command

* add vega-upgrade command

* add checkout

* ignore project

* add ignore

* use remove-vega

* execute vega-version

* run bootstrap

* remove vega-typings

* add vega-typings

* remove vega-typings

Author: danmarshall

extensions/common-frontend/package.json

@@ -8,7 +8,8 @@
     "eslint": "eslint -c ../../.eslintrc.json --fix ./src/**/*.ts*",
     "build-css": "sass ./src/css/app.scss ./dist/app.css",
     "build-ui": "tsc -p .",
-    "build:sanddance-integration": "npm run build-css && npm run build-ui"
+    "build:sanddance-integration": "npm run build-css && npm run build-ui",
+    "remove-vega": "npm un vega"
   },
   "repository": {
     "type": "git",