merging from master

merging from masterHunar (#68)

* adding functionality to add user from admin side in sait-staff

* resove some bugs related to sait-staff page

* removing unwanted content

* adding fnctionality for disable account

* upadate functionality of user disable and add functionality to fetch data single time and reuse it

* adding packages

* for merging from maser

* adding functionality of deleting user

# Please enter the commit message for your changes. Lines starting
# with '#' will be ignored, and an empty message aborts the commit.
#
# Author:    Hunardeep Singh <HunardeepSingh@edu.sait.ca>
#
# interactive rebase in progress; onto c08035c
# Last commands done (2 commands done):
#    pick e081840 front end register pages
#    pick f67ab5e Hunar (#68)
# Next command to do (1 remaining command):
#    pick a4f6886 done header component
# You are currently rebasing branch 'hunar' on 'c08035c'.
#
# Changes to be committed:
#	modified:   package-lock.json
#