* renamed "resetPassword" to "requestResetPassword" & created new "resetPassword" mutation
* added new route to handle resetPassword in UsersRouter.js
* updated resetPassword test to "requestResetPassword" mutation
* updated "resetPassword" mutation args description
* changed token arg description to rerun the tests
* directly using updatePassword for resetPassword
* removed handleResetPassword from UsersRouter.js file
* added test case for reset Password
* changed mutation names to "resetPassword" & "confirmResetPassword"
* changed mutation names in test also