[es] add an option for indexing numeric fields (Float, Int)

changed milestone to %1.1.0

mentioned in commit d7b18dc58c82

mentioned in merge request !77 (merged)

mentioned in commit ab339114cfc4

mentioned in commit ee4a04f7fe7d

mentioned in commit 95ff833552c5

mentioned in commit 87d1fc6214d9

mentioned in commit 926e98f9a780

mentioned in commit 5a29a33af783

mentioned in commit 48bbcea43733

mentioned in commit 6e71f5bbb14a