More tab implementation

template/app/Application.js

template/app/controller/Classes.js

template/app/controller/Tabs.js

template/app/view/Tabs.js

template/app/view/Viewport.js

template/resources/images/data-package.png

template/resources/images/headBG.png

template/resources/images/header.gif

template/resources/images/icon.png

template/resources/images/model.png

template/resources/images/root-lines.png

template/resources/images/tabsDELETE.png

template/resources/images/x122.png

template/resources/sass/viewport.scss