1. A method of dynamically adding content to a displayed work unit view in a task-based interface for a Web-based application, the task-based interface provided in a content aggregation framework, comprising: responsive to a request to execute a selected task, initially creating a work unit view to display the selected task in the content aggregation framework, comprising: locating a template page definition that corresponds to the selected task; invoking each of at least one content-creating software entity identified in the template page definition, the located template page definition further specifying a layout of the work unit view to display the selected task; and rendering, in the work unit view according to the specified layout, content created by each of the at least one invoked content-creating software entity; displaying the work unit view in the content aggregation framework; responsive to a request for dynamic invocation, from the displayed work unit view, of an additional content-creating software entity that is not identified in the template page definition, dynamically updating the work unit view to include content resulting from dynamically invoking the additional content-creating software entity, comprising: creating a container, the container comprising a work unit view area and a row for the resulting content; rendering, in the work unit view area of the container, the currently-displayed  work unit view; invoking the additional content-creating software entity; and rendering, in the row of the container, the content resulting from invoking the additional content-creating software entity; and displaying the dynamically-updated work unit view, as a replacement for the currently-displayed work unit view, using the container.