Tagged release v3.0.20

c6f8e67 Fix tests according to the url changes
75d5a92 Add specs artifacts
8a09d0b Fix tests according to changes
b52fafe Add permisions for view bid doc history
	*WARN Breaking backward compatibility. After this commit apply,
	bid history requires bid.acc_token for show history in tendering and auction states
cfc88c4 Add qualification tag to the update_procedure_document endpoint
3bf4a3f Fix tests according to changes
9f48565 Add endpoints for get bid documents in active qualification
d2d28ba Refactor endpoints names according to REST specification
	*WARN Breaking backward compatibility. After this commit apply,
	change endpoints name for work with bids/awards/contracts documents
	e.g: /api/procedures/{procedure_id}/bid/{bid_id}/documents
	->  /api/procedures/{procedure_id}/bids/{bid_id}/documents
2f95ef1 Add qualification tag to the add_procedure_document endpoint
d7fe106 Add safe loader to opening file with legal names
126c761 Actualize tests
1d1c18b Remove duplicated documents from history
b6c694c Revert "Merge branch 'vadym/refactor_state_machine' into 'master'"
9dc40fc Fix swagger definitions on history endpoints
ce35c44 Remove default values from config configmap
9cc71d1 Refactor state machine
d76e66f Update tests according to changes
8b3e2bc Update local spec