Add the missing extjs top level generated files.

docs/api/generated/plugin_dbui.extjs.GridPanel.rst

docs/api/generated/plugin_dbui.extjs.GridRowNumberer.rst

docs/api/generated/plugin_dbui.extjs.GridTemplateColumn.rst

docs/api/generated/plugin_dbui.extjs.GridWithFilter.rst

docs/api/generated/plugin_dbui.extjs.JsonStore.rst

docs/api/generated/plugin_dbui.extjs.Model.rst

docs/api/generated/plugin_dbui.extjs.Panel.rst

.../api/generated/plugin_dbui.extjs.PanelWithUrlSelector.rst

docs/api/generated/plugin_dbui.extjs.Store.rst

docs/api/generated/plugin_dbui.extjs.TabPanel.rst

docs/api/generated/plugin_dbui.extjs.Viewport.rst

docs/api/generated/plugin_dbui.extjs.Window.rst

docs/api/generated/plugin_dbui.extjs.XmlStore.rst