Replace lib/sql by the cartodb-postgresql submodule
Update cartodb-postgresql submodule
Fix quota enforcement on migration to cartodb-postgresql submodule

See https://github.com/CartoDB/cartodb/pull/441#issuecomment-42648865
CDB-2902 - added new dropbox filters .KML and .GPX + tests checked
CDB-2902 - changed dropbox and gdrive extension label text
CDB-2902 #resolve - added path of a Dropbox file in import service pane
CDB-2795 Added exception throwing if couldn't load template
Merge pull request #451 from CartoDB/CDB-2795
Merge pull request #450 from CartoDB/CDB-2902

Added dropbox path in import list + .KML and .GPX extension accepted
Update cartodb-postgresql submodule reference

 - Do not force creation of new roles (cdb_org_admin, cdb_org_user)
 - Forbid calling CDB_CartodbfyTable unless user quota is set
 - Check quota against value set by CDB_SetUserQuotaInBytes()
Merge pull request #441 from CartoDB/cartodb_extension

Merging to master after some staging testing
Merge branch 'master' into CDB-2909
Merge with master