Enable running all tests via "installcheck"

NOTE: also makes CDB_TableMetadata triggers still functional
      when user quota and varnish invalidation functions are missing
      from the database (currently installed by cartodb ruby)

sql/test

@@ -1 +0,0 @@
-../test

sql/test_ddl_triggers.sql

@@ -1,10 +1,4 @@
-CREATE EXTENSION postgis;
-CREATE EXTENSION schema_triggers;
-CREATE EXTENSION cartodb;
-
-set search_path to public,cartodb,schema_triggers;
-
---set client_min_messages to debug;
+\set VERBOSITY terse
 
 -- Create a stub cdb_invalidate_varnish function if not available
 --CREATE FUNCTION tmp() returns void AS $$

sql/test_setup.sql

@@ -0,0 +1,3 @@
+CREATE EXTENSION postgis;
+CREATE EXTENSION schema_triggers;
+CREATE EXTENSION cartodb;