auomatically append "order by id" when paging and query.orderById = true (#1275)

Add ServerConfig.setDefaultOrderById() and query.orderById(boolean) ... to control automatically append "order by id" with paging query

src/main/java/io/ebeaninternal/server/query/CQueryEngine.java

@@ -190,7 +190,6 @@ public class CQueryEngine {
    */
   public <T> QueryIterator<T> findIterate(OrmQueryRequest<T> request) {
 
-    prepareForPaging(request);
     CQuery<T> cquery = queryBuilder.buildQuery(request);
     request.setCancelableQuery(cquery);
 
@@ -326,24 +325,12 @@ public class CQueryEngine {
     return historySupport.getSysPeriodLower(rootTableAlias);
   }
 
-  /**
-   * deemed to be a be a paging query - check that the order by contains the id
-   * property to ensure unique row ordering for predicable paging but only in
-   * case, this is not a distinct query
-   */
-  private <T> void prepareForPaging(OrmQueryRequest<T> request) {
-    SpiQuery<T> query = request.getQuery();
-    if (query.checkPagingOrderBy()) {
-      request.getBeanDescriptor().appendOrderById(query);
-    }
-  }
+
   /**
    * Find a list/map/set of beans.
    */
   <T> BeanCollection<T> findMany(OrmQueryRequest<T> request) {
 
-    prepareForPaging(request);
-
     CQuery<T> cquery = queryBuilder.buildQuery(request);
     request.setCancelableQuery(cquery);