Fix npm audit and deep scan issues

[ManuGowda]

Expected behavior

Both NPM and DeepScan feasible issues should be fixed.

Actual behavior

Audit(NPM, DeepScan) against master branch shows errors
NPM Audit

found 981 vulnerabilities (980 low, 1 moderate) in 946 scanned packages
  run `npm audit fix` to fix 973 of them.
  8 vulnerabilities require manual review. See the full report for details.

DeepScan
https://deepscan.io/dashboard/#view=project&tid=6759&pid=8869&bid=187355&subview=issues&b=master

Steps to reproduce

• npm audit fix

Which version(s) does this affect? (Environment, OS, etc...)

master

[shuse2]

With latest master branch, audit is fixed