add contactType to contact

- [ ] make each contact be either  "admin" or "customer"
- [ ] on edit/new form have it be a basic select2 like in first example here http://ivaynberg.github.io/select2/
- [ ] add to search form with select2 , have be like the "Multi-Value Select Boxes" example from link above. so that it pops up options as soon as you click it instead of requiring to type first few characters.