add header links to legal pages (#3164)
add header links to legal pages (#3164)

- added news feed and blog links to header of legal pages
- refs #3160
- still doesn't add settings/submenu when logged in on these pages,
not sure if this is necessary.
flodolo/testpilot,chuckharmston/testpilot,mozilla/idea-town,meandavejustice/testpilot,mozilla/idea-town-server,mozilla/idea-town-server,mozilla/idea-town,lmorchard/testpilot,flodolo/testpilot,lmorchard/idea-town-server,fzzzy/testpilot,flodolo/testpilot,chuckharmston/testpilot,mozilla/idea-town-server,fzzzy/testpilot,lmorchard/idea-town,fzzzy/testpilot,mozilla/idea-town,lmorchard/idea-town,mozilla/idea-town-server,mozilla/idea-town,chuckharmston/testpilot,lmorchard/testpilot,lmorchard/idea-town-server,meandavejustice/testpilot,lmorchard/idea-town-server,meandavejustice/testpilot,flodolo/testpilot,lmorchard/idea-town,lmorchard/testpilot,lmorchard/idea-town,meandavejustice/testpilot,chuckharmston/testpilot,lmorchard/idea-town-server,fzzzy/testpilot,lmorchard/testpilot