Improve the Ionic App Base template

[CyberFerret]

There is some discussion on this on another thread:

Improve assets setup in ionic framework

Hi @sformisano - I couldn’t agree more. Such a great framework with loads of features, but missing this key element. @mhartington - it would be really great if the ionic team could come up with a standardised way of doing production/dev builds and also update what is in the www folder by default when creating a new app. At the moment, the www folder is full of extra js files and sass files we don’t want copied over each time we do a build. It slows things down and increases the app size. Maybe …

It appears from the response of Ionic team members that this is a priority for them in the final release.