Moved IARC settings
address @mattbasta @cvan iarc dev page review
move headers outside of islands on dev pages
slugs for iarc rating constants
Merge pull request #1348 from ngokevin/iarcfixes2

clean up ratings pages, move dev page headers outside of islands, iarc slugs
script to award theme reviewer points retroactively (bug 909985)
Merge pull request #1216 from ngokevin/themeaward

script to award theme reviewer points retroactively (bug 909985)
fix flaky extract content rating test
fix esrb icon case sensitive css (bug 934747)
Added form and processing for getting app rating info (bug 931937)