Card 101

- Added style for app-header (this includes the global action button) when clicked it needs to display a modal.
- Added the styles for toolbar, including folder navigation and the toolbar actions icons.
- Added some styles for responsive views.

@ghislaineguerin I'm not sure what you mean by "classes for icon addons on text input". Do you mean something like this: http://getbootstrap.com/components/#input-groups ?