Page /library loads at the bottom

[Alexever17]

Issue Description & Expected Outcome:
Sometime you land on the bottom of the http://www.devgaido.com/library page if you go through the pages a lot and look at different courses.

Symptoms:

Steps to Recreate:
Hmm not sure how to recreate, but it happens quite a lot if you switch through a lot of pages

this worked some times

1. visit http://www.devgaido.com/library
2. go through a categorie to the last page like http://www.devgaido.com/lessons/trygit
3. now hit back all the way until the start page http://www.devgaido.com/
4. go one to the front again to http://www.devgaido.com/library
   you are at the bottom

Resolution:
no clue

[kimkwanka]

This is caused by React Router V4's default behaviour (not resetting scroll when transitioning between pages) and is fixed in the new branch.