Bug Found - back button navigation

[amadulhaxxani]

@amadulhaxxani thank you for the fix. I've tested it and found out one bug.
How to reproduce:

1. Go to the collection Digital Humanities -> LINDAT / CLARIAH-CZ ->LINDAT / CLARIAH-CZ DH Data
2. Select the first Item: you should see a Back to results button
3. Go to the home page
4. Select one item from the What's New section: You should see the Back to results button again
5. BUG: Click to the Back to results: You will be redirected to the Search results of the Digital Humanities -> LINDAT / CLARIAH-CZ ->LINDAT / CLARIAH-CZ DH Data and not to the home page.

Originally posted by @milanmajchrak in dataquest-dev#1184 (comment)