* [feature] Allow users to set default interaction policies
* use vars for default policies
* avoid some code repetition
* unfuck form binding
* avoid bonkers loop
* beep boop
* put policyValsToAPIPolicyVals in separate function
* don't bother with slices.Grow
* oops
* [feature] Email change
* frontend stuff for changing email
* docs
* tests etc
* differentiate more clearly between local user+account and account
* populate user
