first steps for new table attributes title, source and license
fixed metadata dialog specs
CDB-4017
Merge branch 'CDB-4017' of https://github.com/CartoDB/cartodb into CDB-4017
CDB-4017 specs stabilization
CDB-4017 specs stabilization II
Merge pull request #737 from CartoDB/CDB-4017

Adding new table attributes title, source and license