separates models for users and admins
adds function for group to get all members (user + admin)
fixes problems from user / admin association name changes
changed asociations back to one table with attributes
adds public column to groups model
replaces user dash
functionaly for user dash: list public groups and associate them, list involved and disassociate them
changes associations to default to non-admin
adds group chat functionality to user dash
adds twilio helper include to user controller
bug fix for flash message on success
adds creation of GroupMessage entry when sending a group message
fixes group messaging argument passing
fixes group lookup for multi-group messaging in user dash
removes GroupMessage creation
adds group / user name when sending multiple group messages
gives default id for group & user when trying to create GroupMessage object
removed defaults, fixed migration file
user dash shows list of all GroupMessages
text area shows full group message history