fix(app): change the script src to lowercase

Update the script source path to reference the lowercase filenames

Closes #557
chore(gen): update generator dependencies

Update to newer dependencies for the generator
fix(test): update assertFile syntax

Fix failing tests by updating the assertFile syntax from
yeoman-generator

Closes #554
feat(app): remove minsafe options

Remove the minsafe templates, documentation and options from the
generator.

Closes #452

BREAKING CHANGE: Removes the --minsafe from the generator. See the
readme for more information about this change