FIX: correct behavior of "startsWith, "contains" etc (#1031)

* FIX: correct behavior of "startsWith" if string contains "like"-wildcards

* Removed likeClasues with disabled escaping in database platforms as bind values are properly escaped now.

src/main/java/io/ebeaninternal/server/expression/DefaultExpressionRequest.java

@@ -93,6 +93,11 @@ public class DefaultExpressionRequest implements SpiExpressionRequest {
     sql.append(" ");
   }
 
+  @Override
+  public String escapeLikeString(String value) {
+    return queryRequest.escapeLikeString(value);
+  }
+
   /**
    * Increments the parameter index and returns that value.
    */