Added workaround to avoid plus signs in BPMN IDs

modules/activiti-cycle/src/main/java/org/activiti/cycle/impl/transform/signavio/ExchangeSignavioUuidWithNameTransformation.java

@@ -78,7 +78,7 @@ public class ExchangeSignavioUuidWithNameTransformation extends OryxTransformati
       return null;
     }
     try {
-      return URLEncoder.encode(name, "UTF-8");
+      return URLEncoder.encode(name.replace(' ', '_'), "UTF-8");
     } catch (UnsupportedEncodingException e) {
       // Should never happen :-)
       throw new IllegalStateException("Wired, platform couldn't encode UTF-8", e);

modules/activiti-cycle/src/test/java/org/activiti/cycle/impl/transform/signavio/ExchangeSignavioUuidWithNameTransformationTest.java

+package org.activiti.cycle.impl.transform.signavio;
+
+import static org.junit.Assert.*;
+
+import org.junit.Test;
+
+
+public class ExchangeSignavioUuidWithNameTransformationTest {
+
+  @Test
+  public void testAdjustNamesForEngine() {
+    String name = "Send rejection e-mail";
+    String actual = ExchangeSignavioUuidWithNameTransformation.adjustNamesForEngine(name);
+    assertEquals("Send_rejection_e-mail", actual);
+  }
+
+}