OPAL-1833 Revert ElasticSearch version to 0.20.6
OPAL-1834 value size is available from magma and is in the binary values dtos.
OPAL-1834 magma 1.6.4 for javascript method accessing value size
Renamed Value valueSize for length
OPAL-1838 Query for table dtos without the variables and entities counts. Disabled the suggestion when adding a derived variable.
OPAL-1839 Reset mappingCreated flag when mapping was deleted
OPAL-1840 Listeners callback on closeables list clear()
Magma 1.6.5
Flush ES indices at dist upgrade