#1326 ongoing allowance of public index action call of viz endpoint
#1326
Merge branch 'master' into issue-1326

Conflicts:
	NEWS.md
Merge branch 'master' into issue-1326
#1326
Improved error message so Rollbar can group it
Improved logging error fallback
Fix #1544 handling duplicated column names and improving invalid character handling
Fix for #1555 increasing timeout
Merge pull request #1556 from CartoDB/1555-Vacuum_full_timeout

Fix for #1555 increasing timeout
Increased vacuum full timeout even further
Merge pull request #1557 from CartoDB/1555-Vacuum_full_timeout

Increased vacuum full timeout even further
Fix for #1561 catching errors
Merge pull request #1554 from CartoDB/1544-ogr2ogr2_crashes_because_of_encoding

1544 ogr2ogr2 crashes because of encoding
Merge branch 'master' into 1561-json_visualizations_controller_fails_for_unlinked_tables
Merge pull request #1549 from CartoDB/issue-1326

Visualizations endpoint should check if request is authenticated
Merge branch 'master' into 1561-json_visualizations_controller_fails_for_unlinked_tables
Merge pull request #1552 from CartoDB/1540-2-Retry_at_Redis_timeout

Improved error message so Rollbar can group it
Merge branch 'master' into 1561-json_visualizations_controller_fails_for_unlinked_tables
Improved error at 400 and return