simplify checks
switch to Emitter instead of Collection as a parent
switch to Emitter instead of Collection as a parent
clean
replace console.assert with exception
add listeners notification of focus change
add navigation
build
add ui component - progress bar
Merge remote-tracking branch 'origin/master'

Conflicts:
	doc/PageManager.html
	doc/app.js.html
	doc/collection.js.html
	doc/component.js.html
	doc/dom.js.html
	doc/emitter.js.html
	doc/index.html
	doc/model.js.html
	doc/module-stb_app.html
	doc/module-stb_collection-Collection.html
	doc/module-stb_collection.html
	doc/module-stb_component-Component.html
	doc/module-stb_component.html
	doc/module-stb_dom.html
	doc/module-stb_emitter-Emitter.html
	doc/module-stb_emitter.html
	doc/module-stb_model-Model.html
	doc/module-stb_model.html
	doc/module-stb_request.html
	doc/module-stb_router.html
	doc/module-stb_ui_button-Button.html
	doc/module-stb_ui_button.html
	doc/module-stb_ui_grid-Grid.html
	doc/module-stb_ui_grid.html
	doc/module-stb_ui_list-List.html
	doc/module-stb_ui_list.html
	doc/module-stb_ui_modal-Modal.html
	doc/module-stb_ui_modal.html
	doc/module-stb_ui_page-Page.html
	doc/module-stb_ui_page.html
	doc/module-stb_ui_panel-Panel.html
	doc/module-stb_ui_panel.html
	doc/page.manager.js.html
	doc/request.js.html
	doc/router.js.html
	doc/stb_ui_check.module_box-CheckBox.html
	doc/stb_ui_check.module_box.html
	doc/stb_ui_modal.module_box-ModalBox.html
	doc/stb_ui_modal.module_box.html
	doc/stb_ui_modal.module_message-ModalMessage.html
	doc/stb_ui_modal.module_message.html
	doc/ui_button.js.html
	doc/ui_check.box.js.html
	doc/ui_grid.js.html
	doc/ui_list.js.html
	doc/ui_modal.box.js.html
	doc/ui_modal.js.html
	doc/ui_modal.message.js.html
	doc/ui_page.js.html
	doc/ui_panel.js.html
	package.json