CDB-4364 Implemented POST support
CDB-4368
Merge pull request #872 from CartoDB/CDB-4368

CDB-4368 Just improved the reported error to see if gives better insight
CDB-4364 Specs stabilization
Disabling debug flag now that works ok in live
Adding crazy egg
Merge pull request #876 from CartoDB/crazy-egg

Adding crazy egg
CDB-4364 Removal of GET retrieval of item ids
Merge pull request #873 from CartoDB/CDB-4364

CDB-4364 Use POST at ArcGIS instead of GET for bigger blocks
Merge remote-tracking branch 'origin/master' into CDB-4352
CDB-4352 Force output datetime format for conversion of xlsx2csv