[fix] fix certify identity duplicates in combobox and database

src/sakia/data/repositories/identities.py

@@ -23,6 +23,18 @@ class IdentitiesRepo:
         Commit an identity to the database
         :param sakia.data.entities.Identity identity: the identity to commit
         """
+        if identity.blockstamp != BlockUID.empty():
+            # Search same identity with empty blockstamp (incomplete)
+            same_with_empty_blockstamp = self.get_one(
+                currency=identity.currency,
+                uid=identity.uid,
+                pubkey=identity.pubkey,
+                blockstamp=BlockUID.empty()
+            )
+            # if same identity with empty blockstamp...
+            if same_with_empty_blockstamp:
+                # remove it to avoid duplicates
+                self.drop(same_with_empty_blockstamp)
         identity_tuple = attr.astuple(identity)
         values = ",".join(["?"] * len(identity_tuple))
         self._conn.execute(
@@ -64,7 +76,7 @@ class IdentitiesRepo:
     def get_one(self, **search):
         """
         Get an existing identity in the database
-        :param dict search: the criterions of the lookup
+        :param **kwargs search: the criterions of the lookup
         :rtype: sakia.data.entities.Identity
         """
         filters = []