Merge pull request #953 from shamil-gadelshin/migrate_proposals_default_values

Migrate proposals default values.

runtime/src/migration.rs

@@ -25,12 +25,15 @@ impl<T: Trait> Module<T> {
         Self::initialize_storage_working_group_mint();
         Self::initialize_storage_working_group_text_constraints();
         Self::clear_storage_data();
+
+        proposals_codex::Module::<T>::set_default_config_values();
     }
 }
 
 pub trait Trait:
     system::Trait
     + minting::Trait
+    + proposals_codex::Trait
     + working_group::Trait<working_group::Instance2>
     + storage::data_directory::Trait
     + storage::data_object_storage_registry::Trait