Changes in PostGIS version to use 4 numbers

[lekum]

Request for a new Data observatory extension deploy

I'd like to request a new data observatory extension deploy: dump + extension

VERY IMPORTANT!!!

PLEASE USE python scripts/generate_fixtures.py TO GENERATE NEW FIXTURES FOR THE NEW DUMP AND OVERRIDE IT IN THIS PROJECT BEFORE PASS THE TESTS

Performance comparison to last deployment

Please include link here to comparison perftests:

http://52.71.151.140/perftest/#oldsha..newsha

Dump database id to be deployed

Please put here the dump id to be deployed:

Data Observatory extension PRs included.

Please update the NEWS.md

Add down here the PR links to be added and deployed:

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// @CartoDB/datateam