Tagged release v3.18.0

aa1d7344 Update prozorro-tools version to v0.6.0
035d9b3c Update schematics version to v3.1.11
9bf6f47c Add security for bid doc history endpoints swagger description
79064f6f Add restriction on changing contract and award value fields
e32ed3c0 Update award.value and contract.value to readOnly in all procedures
ec0e1fd7 Forbid to send time for auctionPeriod.startDate
8aa2e825 Update
aa502c9f Update schematics and prozorro-tools imports
5e4b1ac9 Add tests
c35b15eb Fix del document not found error
8cb829a8 Allow to update minNumberOfQualifiedBids field
b59a6ea8 Update tests and fixtures according to changes
9b8a9bf5 Refactor status chaanging accoring to minNumberOfQualifiedBids field and valid bids
e1e95e6b Add validation on document id
4f8726df Fix names
5de633ba Update tests according to changes
d076d90b Remove possibility cancel ccontract directly
1f594d41 Update description in railwayCargo schema
b130d0e0 Add exclusionObjectType document
28c75f56 Add tests to check ability subsoil pending award up to contract active status
7c36840b Remove check of active contract for subsoil pending_waiting award cancellation
03c1d2bf Allow to modify award in pending_payment, pending_admission subsoil procedure state
2432c978 Fix invalid swagger endpoint
6d2dc209 Update award update_award_status method with context everywhere
8b1a2733 Correct legal names for railwayCargo award
bc479d5f Add tests for timber qualification state
16d162e6 Allow to cancel pending award by owner
04bd9c0a Handle timber awards status changing on award state machine
02047376 Add tests for ensure permissions on load doc in cancelled award
c31920c2 Add migration with test
8c4a32ee Rename timber Award, Contract, Item, Bid to timber-english Award, Bid, etc.
d8a2cfb1 Remove readOnly from TimberEnglishProcedure.minNumberOfQualifiedBids field
cd77cd8d Add readOunly mark for timber.Award, add model description
55771f53 Remove base.Value properties overriding for TimberEnglishProcedure.guarantee field
50ad0d8d Remove timber Cancellation, timber Question, use base models instead
e92087e8 Add tests
ddfd2a19 Set railwayCargo.Classification ID by default
fa3a427c Add tests
ef3f37a5 Add award.verificationPeriod.endDate
79cea045 Add tests
47304833 Add minimalStep to whitelist in active_rectification
bb7392c3 Move bids visability tests to pytest
1d3d7742 Move auction databridge fixtures to conftest