CDB-34 #close Remove the 'Start with base geometries' option from the create table modal window.
Merge branch 'develop' of github.com:CartoDB/cartodb20 into develop

* 'develop' of github.com:CartoDB/cartodb20:
  Revert "Refactor user database triggers"
  Revert "Create varnish invalidation function _before_ the trigger using it"
  Revert "Drop varnish-invalidation triggers from user tables to tablemetadata"
  Revert "Add comment about why table.set_triggers drops a trigger"
  Typo: "tests" -> "tasks" (testing is still undocumented)
Revert the new-trigger reverts

This reverts commits:
 b1526afc456cb19e95bb772a1260243be5927e78.
 b47017751f781180bb1e671efa4f843d2350cb8e.
 199d7445ddf41ff7c66e615bb8e1d799bda425e1.
 202a139ed67edc45054926326d70a450e521fe7d.
Fix typo in CDB_TableMetadata varnish invalidation trigger