Jan's final changes

[Konstiman]

This PR also contains changes from the branch triple-cs. Do not merge this PR before the triple-cs branch is merged to dev.

Customized the Headstart UI:

• Changed the map title.
• Changed the shape of the non-text documents in the vis.
• Increased the size of the "dog ears" in the vis.
• Added new button "File" for the non-text documents in the list.