CDB-2993 #resolve - iframe share url does not contain protocol now
CDB-2940 #resolve - Validate or add automatically (when needed) http:// to the URL on the user metadata field
CDB-2819 #resolve - api_key empty for sql requests within public view
CDB-3011 improved logs
Merge pull request #478 from CartoDB/CDB-2993

Several UI fixes
Merge pull request #479 from CartoDB/CDB-3011

CDB-3011 Improve merge tables log info
Merge branch 'master' into CDB-2951
CDB-2951 submodule update (to grab keeping whenever possible updated_at, created_at and cartodb_id) + test rake