Refactor code originally contributed by Tomáš Gregovský.

Based on the comments below and in attached concept page:

• convert scripts to single one named mgnl (syntax will then be mgnl create-page xxx, {{mgnl create-component xxx}, etc )
• upon install, make scripts global ( install only with -g)
• during install, prototypes used by cli to produce template and dialog definitions are expanded in global node_modules location
• as optional step, add mgnl setup that will copy prototypes and package.json to either current location or to one provided as parameter to the command
• modify script to read prototypes from the location specified in MGNLCLI_HOME system property or from default (global) location if not set.

This way internals of the cli will stay hidden by default, but can be still exposed via setup for those who need to have multiple different types of prototypes and other configuration for multiple different projects.

If in doubt, check the concept page or consult w/ reporter.