Merge pull request #133 from euroelessar/master

Removed legacy meta/check/recovery/iterate support
Merge pull request #134 from euroelessar/master

Removed last sync methods and fixed module_backend
Fixed error with elliptics_id
Merge pull request #135 from shaitan/master

Fixed error with elliptics_id
Fixed BULK_READ server implementation

Implementation must not send ack with error if not all requests failed
Added session::find_any_indexes

Find any implements OR paradigm in addition to old AND one.
session::find_indexes renamed to session::find_all_indexes