Add owner to projects, and create project members pivot table

Also refactors the projects seeder to include owner and a random number of projects per user.

Signed-off-by: Jesus Fernandez <jesus.fndz@gmail.com>
Merge pull request #51 from informulate/api

Add project owners, and create initial project members pivot table
Fix a typo in the occupations migration file name

Signed-off-by: Jesus Fernandez <jesus.fndz@gmail.com>
Prevent database seeder from running in production

* Checks the environment before running the database seeder
* Refactors the truncates command tu use a $tables array instead of specifying each truncate

Signed-off-by: Jesus Fernandez <jesus.fndz@gmail.com>