Fixed keva_namespace transaction propagation.

Now it crashed maybe when connecting block.

src/keva/main.cpp

@@ -397,6 +397,13 @@ CheckKevaTransaction (const CTransaction& tx, unsigned nHeight,
      name input that is being updated.  */
 #endif
 
+  if (nameOpOut.isNamespaceRegistration()) {
+    if (nameOpOut.getOpNamespaceDisplayName().size () > MAX_VALUE_LENGTH) {
+      return state.Invalid (error ("CheckNameTransaction: display name value too long"));
+    }
+    return true;
+  }
+
   assert (nameOpOut.isAnyUpdate());
   if (nameIn == -1) {
     return state.Invalid(error("CheckNameTransaction: update without"

src/policy/policy.cpp

@@ -81,7 +81,7 @@ bool IsStandard(const CScript& scriptPubKey, txnouttype& whichType, const bool w
 
 bool IsStandardTx(const CTransaction& tx, std::string& reason, const bool witnessEnabled)
 {
-    if (tx.nVersion > CTransaction::MAX_STANDARD_VERSION || tx.nVersion < 1) {
+    if (!tx.IsKevacoin() && (tx.nVersion > CTransaction::MAX_STANDARD_VERSION || tx.nVersion < 1)) {
         reason = "version";
         return false;
     }