Add option to work without database

[Nolanus]

For some basic projects a database might not be required. In the process of adding support for new database software (#170) maybe an option can be added to not include any database support at all.
This option will be useful for projects using exotic database techniques as well, as they do not have to remove existing boilerplate code from the generated project structure.

[ericmdantas]

Hello, @Nolanus.

Just so we're clear: you mean having a fullstack app without the DB part, not only having client side app, right?

[Nolanus]

Hi,
correct. So client side angular1/angular2 and server side node+express/go+echo, but no database.

[ericmdantas]

Alright, thanks!