Adding SQL queries for SYNC STATUS initialization

Creating SYNC_STATUS table and adding a trigger to ensure
a row gets created in this table when a row is created in the
users table.
Do not need to insert data in user groups

Removing the logic in the user creation trigger that deals with
adding a record in the group table whenever a user is added (depending
on which class he is assigned to) - this logic is not needed
in the custom branch.
Removing update trigger on user

This trigger is no longer needed - we don't use groups in the custom
build.