Landing page and navbar active link

[Lucrezia-Cester]

I think the landing page could include the process tasks and the docstring explaining the functionality of each.

The idea is that the dashboard contains only the choose and upload button and the uploaded files. The uplaod page is removed.

[Lucrezia-Cester]

Previously, when you clicked on the navbar pages, the navbar did not change depending on the page you were on. I have also added the active class to the navbar so that when you click on a page, you can see that page title being "active" in the navbar