Add sample/starter templates

[jacobwegner]

Currently no templates are included in the project.

[jacobwegner]

_invite_form.html implementation requires eldarion-ajax; should be documented or dealt with in sample templates.

[jacobwegner]

See #37 for suggested renaming under pinax namespace.

Templates should be added to extracted from the team-wiki starter project and added to pinax-theme-bootstrap

[grahamu]

Update: Templates should be added to extracted from the team-wiki starter project and added to pinax-templates.