refactor ask bundle name
move grunt configuration file generation to layout generator
move public asset files to layout generator
move some twig template files to the layout generator
removed layout templates from default site generator
layout is sub command of default site generator
added wrapper function to render a single file
refactored default site generator
refactored default site fixtures
solved merge conflict
fixed typo
code improvements
Merge pull request #122 from Kunstmaan/layout_generator

Move layout to own generator + refactor default site generator