added support for config change proposals

- added some fift scripts for the config change proposal voting
- added validator-engine-console support for the config change proposal voting
- additional sanity checks in catchain
- unsafe slow catchain resync method

validator-engine-console/validator-engine-console-query.h

@@ -835,6 +835,29 @@ class CreateElectionBidQuery : public Query {
   std::string fname_;
 };
 
+class CreateProposalVoteQuery : public Query {
+ public:
+  CreateProposalVoteQuery(td::actor::ActorId<ValidatorEngineConsole> console, Tokenizer tokenizer)
+      : Query(console, std::move(tokenizer)) {
+  }
+  td::Status run() override;
+  td::Status send() override;
+  td::Status receive(td::BufferSlice data) override;
+  static std::string get_name() {
+    return "createproposalvote";
+  }
+  static std::string get_help() {
+    return "createproposalvote <data> <fname>\tcreate proposal vote";
+  }
+  std::string name() const override {
+    return get_name();
+  }
+
+ private:
+  std::string data_;
+  std::string fname_;
+};
+
 class CheckDhtServersQuery : public Query {
  public:
   CheckDhtServersQuery(td::actor::ActorId<ValidatorEngineConsole> console, Tokenizer tokenizer)