add s3 hostname for aus region
add some instructions for contributing

Largely drawn from https://github.com/openaustralia/righttoknow#contributing
Merge branch 'Development' of github.com:equivalentideas/detentionlogs into Development
remove redudant wrapping <a> from link_to_right_to_know
add comment linking to Right To Know api instructions for this model
add method to turn FoiRequest :described_state into html classes
prefix each state class with "foi_state_"

I suspect there are more robust ways to do this than with the join() separator,
add documentation to incident base styles
consolidate page-header styles into new partial
remove state from foi_link

It should be used on wrapping elements instead.
more margin from top of h1 to bottom of sub-nav

This should make the overall layout more flexible
simplify incident show view
highlight basic incident comparable data on small screens index
cleanup
fix copy, change 'detailed incident report' to 'incident detail report'
fix banner float bug
style new .page-header section
make space at the bottom of page-headeer the exception
add a placeholder selector for extending btn-alt style
hide the last breadcrumb on small screens