Reindex improvements

-Reindex now calls the delete-databse.js script which is much faster and more complete than the previous manual delete code the resync used to use
-The delete-database.js script now accepts a parameter that suppresses the delete prompt when being called from the resync process
-Reindex and normal block sync now reuse the same block sync code
-Reworked the sync script to no longer require the readline-sync dependency
-The readline-sync dependency has been completely removed from package.json since it is no longer used

package.json

@@ -44,7 +44,6 @@
     "postman-request": "^2.88.1-postman.31",
     "pug": "~3.0.2",
     "qr-image": "^3.2.0",
-    "readline-sync": "^1.4.10",
     "sass": "^1.52.3",
     "serve-favicon": "^2.5.0"
   },