Fixed #3: Added sheerka.resolve_rule()

Fixed #5: Refactored SheerkaComparisonManager
Fixed #6: Sya parser no longer works after restart

src/evaluators/PythonEvaluator.py

@@ -328,15 +328,14 @@ class PythonEvaluator(OneReturnValueEvaluator):
         :return:
         """
         if isinstance(name, Rule):
-            return name
+            return context.sheerka.resolve_rule(context, name)
 
         if isinstance(name, Concept):
             name = core.builtin_helpers.ensure_evaluated(context, name)
             return name
 
         if isinstance(name, Token) and name.type == TokenKind.RULE:
-            rule = context.sheerka.get_rule_by_id(name.value[1])  # TODO: need a resolve function for the rules
-            return rule if isinstance(rule, Rule) else None
+            return context.sheerka.resolve_rule(context, name)
 
         if isinstance(name, tuple):
             raise Exception()