changed profiles to extend Model instead of UserAccount
added accounts back to lilst of installed apps
changed field 'user' to be called 'account'
scaffolded initial shortterm module model
added term field to visit model
changed the account model to use a combination of Users and Profiles

Generic user information is now in the User model. TA, trainee, short-termer, and LSM hopsitality guests are now considered "profiles." Each user can have multiple profiles and one "primary" profile. Other profiles that will be added in the future will be office TA sisters, and serviceWorkers. profiles can be defined in any module, not just the account module. short-termers and LSM hospitality guests have also been moved to their appropriate (new) modules
initial scaffolding for hospitality module
rest of short-term scaffolding module