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
refactor webapp model code that checks for submission completion