forms: Fixed user registration form button
alembic: Set target_metadata to allow revision creation with --autogenerate
model: Split User.name column into first and last name
forms: Added render_two_fields() macro
forms: Replaced name fields with first and last name fields
search: Fixed user search
tests: Fixed unit tests
Merge pull request #166 from Turbo87/username-split

Split User.name column into first and last name
model: Renamed outdated tg_* tables

TurboGears is history!
model: Replace permission system with simple admin flag

We are not really using the permission system and we don't need such a
complex system if we don't use it properly.
model: Renamed auth model to user
Merge pull request #168 from Turbo87/tg-tables

Simplified user model