Update Berksfile

Change deprecated `site` statement in favor of `source`.
Sort and indent cookbooks dependencies
Update dependencies cookbooks versions

And use Pessimistic version constraint.
Update recipes, add licence to files header
Merge cookbook-core

Conflicts:
	metadata.rb
	recipes/default.rb
Update cookbook with proper name
Add missing licences on file headers
Merge cookbook-lamp

Conflicts:
	metadata.rb
	recipes/default.rb
	recipes/lamp.rb
Update cookbook with proper name
Add missing licences on file headers