Update to Express 4.0, Improve Routing & Error Handling

EXPRESS

• Manually add middleware we need now that Connect is gone (morgan, cookie-parser, body-parser, method-override)
• app.router is deprecated: update the way routing is handled

ROUTING

• Routing is now handled in app/routes, config/routes.js is no more.
• Add 2 new example controllers to highlight how router works (foobar, crud)
• Updated auto router

ERROR HANDLING

• Cleaned up & modularized error handling
• Use next() vs manually writing res.send(404/500/etc) for every error
• Added new tesla.throw function to make handling HTTP errors easier
• Errors are now thrown with next(tesla.throw(404)), next(tesla.throw(500)), etc

VIEWS

• Made index default view instead of default
• Updated error views for all template languages
• Updated view for all templates to work better with CLI boilerplate & bower injection