Create week view layout

[ro-abramov]

Create a week layout.

As a result of that story a separate component should be created.

• Component should have 7 columns for each day and be able to render events in appropriate column.
• Each column should have a header with title of a particular day.
• User should be able to navigate b/w weeks using horizontal swipe gesture.
• The whole view should have a vertical scroll if there are lots of content.
• Current day (Today) should be highlighted.