TASK-US13-DAO: DAO Impl with MyBatis

According to [List.subList](http://docs.oracle.com/javase/8/docs/api/java/util/List.html#subList-int-int-) javadoc, 

> Returns a view of the portion of this list between the specified fromIndex, inclusive, and toIndex, exclusive

so `toIndex` could be equal to `size`