MB-8569: removed lookup by first letters

[alk@tut.by: added ticket reference]

Change-Id: Ib7b37cbe2fd7b4dd2eb08dd1524cf2996f660974
Signed-off-by: Aliaksey Kandratsenka <alk@tut.by>
Reviewed-on: http://review.couchbase.org/27529
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
MB-6989: start/end keys auto quoting for document filter

Change-Id: I06503780814648cc114498031cbd920fc02d06b2
Reviewed-on: http://review.couchbase.org/27530
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>