Implemented ConceptManager with concept creation, modification and deletion

tests/BaseTest.py

@@ -79,7 +79,7 @@ class BaseTest:
             else:
                 c.init_key()
                 sheerka.set_id_if_needed(c, False)
-                sheerka.add_in_cache(c)
+                sheerka.test_only_add_in_cache(c)
 
             result.append(c)
 
@@ -93,7 +93,7 @@ class BaseTest:
 
         if create_new:
             sheerka.cache_manager.caches[SheerkaRuleManager.FORMAT_RULE_ENTRY].cache.clear()
-            sheerka.cache_manager.delete(sheerka.CONCEPTS_KEYS_ENTRY, SheerkaRuleManager.RULE_IDS)
+            sheerka.cache_manager.delete(sheerka.OBJECTS_IDS_ENTRY, SheerkaRuleManager.RULE_IDS)
             with sheerka.sdp.get_transaction(context.event.get_digest()) as transaction:
                 transaction.clear(SheerkaRuleManager.FORMAT_RULE_ENTRY)
 
@@ -146,8 +146,6 @@ class BaseTest:
         """True ret_val + add concept in cache"""
         if isinstance(obj, Concept):
             obj.init_key()
-            if sheerka.has_key(obj.key):
-                sheerka.add_in_cache(obj)
         return sheerka.ret(who, True, obj)
 
     @staticmethod
@@ -180,7 +178,7 @@ class BaseTest:
             concept.get_metadata().definition_type = DEFINITION_TYPE_BNF
         concept.init_key()
         sheerka.set_id_if_needed(concept, False)
-        sheerka.add_in_cache(concept)
+        sheerka.test_only_add_in_cache(concept)
         return concept
 
     @staticmethod