#13 Sync password changes and deleted users from PN

[Co Ho]

Upon login:

1) Check the MD5 hashcode from nuke_users table first.

2a) If not found: delete the user out of X-User table
table to match the deletion from nuke_user.

2b) If found and hashcode is different than the one on
X-User table, update nuke_xuser_users table with the
new password too.