Isolated Account class from project...

For domain simplicity, the Customer class has absorbed features of the
Account class. The Account class still exists in case the decision is
made to go back to the original schema.
Bootstrapped User and Owner classes...

Bootstrapped 2 instances of the User class (one admin, one user) and 3
instances of the Owner class...
Many changes...

Changes include:
- generated all controllers except for vaccination, and vaccination
types
- have login screen working
- incorrect login returns to login screen
- successful login goes to empty main screen
Add owner and pet link to pet/list.gsp...

Add owner and pet link to pet/list.gsp...