Move index page into its own file
Move GetClasses into its own file
Remove unused code from package
Remove unused InBodyLinkCleanerForR1
Move HtmlCleaner and subclasses into own file
Move OmnitureAnalyticsData into its own file
Move ContentLayout into its own file
Fix test
Merge pull request #7381 from guardian/tuesday-refactor

Tuesday refactor: split out views/support/package.scala into separate files