adding a default base.html that will import site_content base.html

This file can be overridden by placing a new base.html in the templates folder.
adding updated main and normalizer css files
remove old style.css boilerplate
adding standard js files
remove old files
remove old files
new javascript placeholders
update main.css
remove mistaken commit
Remove copies of javascript and css boilerplate files
Create new template copies of default css files.
Update base template 
Adding management command to install  boilerplate static files.

Update settings to provide extensible list of files to process.
Update some output lines
Merge branch 'feature/adding-html5bp' into development
add new template selection model
add new field for template selection
display selection in admin
update view to support new template path
Add new default block structure to the site_content base.html