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CDB-1843 upgrades windshaft
Merge pull request #208 from CartoDB/CDB-1843

Upgrades windshaft
Supports `!scale_denominator!` dynamic param in SQL queries
Merge pull request #209 from CartoDB/scale_denominator-support

Supports `!scale_denominator!` dynamic param in SQL queries
Removes duplicated code in query_tables_api
Merge pull request #210 from CartoDB/improve-query-tables-api

Removes duplicated code in query_tables_api
Removes getTableGeometryType metric
Removes get_infowindow and get_map_metadata metrics
Removes cors metric
Update news
Merge pull request #211 from CartoDB/CDB-3659

Remove some metrics
Use double quote to be consistent
Changes mapnik dependency in windshaft module to use node-mapnik 1.4.13
which is based on mapnik-2.3.x
Fixes template.json in documentation to be a valid JSON
Upgrades windshaft and cartodb-redis
Adds poolSize configuration for mapnik
Run check before any assert so server is stopped
Merge branch 'master' into mapnik-2.3.x
Starts using mapnik 2.3.x via windshaft upgrade