Updated translation for messages.po

Added translations and fixed others. Not finished.
Merge pull request #1554 from ngokevin/master

flag next step message on devhub
only show one required step at a time on app dashboard
Refactors CanBeHeroAuthorization to rely on request.DATA to parse request body, rather than assuming JSON. Rookie mistake, @chuckharmston. (bug 951353)
Merge pull request #1555 from chuckharmston/951353-canbehero_json_nono

Refactors CanBeHeroAuthorization to rely on request.DATA to parse request body, rather than assuming JSON. Rookie mistake, @chuckharmston. (bug 951353)
Fixes test broken in db80ac0
Only show splash screen in Fireplace
Bump app-validator
Make TestCollectionMembershipFieldES test the ES path explicitely (bug 950655)
Merge pull request #1537 from auzelac91/patch-3

Updated translation for messages.po
Extract/compile script.  Today's lucky number is 10016.
update iarc icons, clean up content ratings css (bug 950233)
Merge pull request #1543 from ngokevin/iarcnewicons

update iarc icons, clean up content ratings css (bug 950233)
Don't let user, ip_address change when updating a review (bug 951620)
Merge pull request #1560 from diox/fix-ratings-edit-by-admin

Don't let user, ip_address change when updating a review (bug 951620)
Fix conflated payments.js-s (bug 951696)
Merge pull request #1562 from mattbasta/reviewersstandalone

Fix conflated payments.js-s (bug 951696)
Set STATIC_URL using CUSTOM_CDN environment variable.
refactor webapp model code that checks for submission completion
Merge pull request #1563 from jasonthomas/settings

Set STATIC_URL using CUSTOM_CDN environment variable.