Renaming database relation cru_crs_conferences to conferences
Rename cru_crs_pages relation to pages
Renaming cru_crs_blocks relation to blocks
Renaming cru_crs_answers relation to answers
Renaming cru_crs_users relation to users
Renaming cru_crs_auth_provider_identities to auth_provider_identities
Renaming last two relations to authorizations and registrations
Merge pull request #41 from CruGlobal/rename-database-relations

Rename database relations