add user_limit to SoftwarePlanVersion
limit ability to add mobile workers for community plan if in excess of mobile workers
add user_fee to SoftwarePlanVersion
ask user to confirm billing account info instead of completely limiting new users todo: create confirmation view
hide organization settings if cross_project reports privilege is not present
use username, not email for created_by user in new BillingAccount
added a period at the end of alert message
update permissions handling for inbound sms / survey reminders
fix typo in alert message on users list page (excess users)
add date_confirmed_extra_charges to billing account model
update feature limiting for mobile workers