Admin should have resellers (normal users) and normal customers (subusers)
Merge pull request #1 from antonraharja/subusers

Admin should have resellers (normal users) and normal customers (subusers)
Normal users can create subusers
user_add() to consider footer
default user level is 4, a subuser
update user_pref and user_config to work with users subusers
add option default_user_status on main configuration and implement it
Merge pull request #2 from antonraharja/registration

add option default_user_status on main configuration and implement it
fix column mismatched on tblUser
fix unable to find playsmsd.conf and unable to start because missing pear DB
remove MAX_EXECUTION_TIME from playSMS daemon, use quotes on playsmsd.conf options
rename "Administration" to "Settings"
re-organize user_pref user_config and subusers_mgmnt menu
re-organize menu settings
add user_setdatabyuid() user_setparentbyuid() user_getparentbyuid()
update user_setparentbyuid() and user_getparentbyuid()
update rete_deduct() implemented by simplerate to accomodate parents
update rete_refund() implemented by simplerate to accomodate parents
simplerate_getbyprefix() now become hookable function available from lib/fn_rate.php as rate_getbyprefix()
update rate_cansend() add rate_getcharges() and modify sendsms() and sendsms_process() to check users and parents balance before sending SMS