Fix issue #114

Manually removed vulnerability by upgrading 'tar' package from 2.2.1 to 4.4.8 (https://stackoverflow.com/questions/55635378/angular-devkit-build-angular-arbitrary-file-overwrite). angular-devkit and node-sass issues are still open. (angular/angular-cli#14138, sass/node-sass#2625). Will permanently be fixed once above 2 issues are addressed by Angular and node-sass teams.

Author: ShahanaFarooqui