* Remove proposals for creating deposit and withdrawal objects, strenghten evaluator checks
* Only active SON can create the object
* Only expected SON can confirm the transaction
* Transaction must be initiated (paid) by SON account owner (SON account given in operation)
* Transaction confirmation must contain exactly the same data as existing object
* Mirror SON owner account weights from son-account.active.account_auths to active SONs
* Fix duplicated typedef, peerplays_sidechain::sidechain_type to chain::sidechain_type
* Add missing serialized field
* Add stop_son_maintenance CLI call
* fix bug with SON activation
* son_maintenance_operation
* son_maintenance_operation tests
* cli test for son maintenance state
* start_son_maintenance CLI call
* keep maintenance state during active SON set changes
* do not allow update votes with both empty lists
* fix error messages
* check number of sons against votes number in account_object
* Update error message
* refactor cli tests
* update_son_votes tests
* list_sons test
* test changes in get_global_properties() result
* fix generate_block failure
* fix update_son_votes test
* improve update_son cli test
* fix linking errors
* refactor select_top_fifteen_sons test
* refactor other son cli tests to use son_test_helper
* create_vesting call in wallet_api
* test fix
* fix create_son in wallet_api and cli tests
