Create a "create" command that contains template subcommands

[StephaneCapponi]

Idea: Instread of having a createproject, createplugin or createcommand. It might be better to have a single create command that can have access to template subcommands sush as (plugin, command, project, ...)

Instead of this:

python manage.py createproject myproject

We would do:

python manage.py create project myproject