dont check for pg that many times ;)
WIP: install kuhsaft, make it optional
WIP: install kuhsaft, add missing shoestrap_generators spec
WIP: prep kuhsaft generator
refactor/clean up app generator

- first check what gems need to be installed
- run geminstall generator to add them to gemfile
- bundle
- only then run the custom generators to install &
setup the gems
- reduce private method count
add simple generator that injects gem into gemfile
remove gem commands from generators