Squashed commit of the following:

commit 9407ed0fbfce4efb323036c5e102aafde3f0dec6
Author: Antonin Kral <antonin.kral@dtone.com>
Date:   Fri Aug 9 19:13:03 2019 +0200

    Effective work

commit c0f59bbd7ec52c011e7a34498ad672dd955dee84
Author: Antonin Kral <antonin.kral@dtone.com>
Date:   Fri Aug 9 18:42:05 2019 +0200

    Big picture

commit 5cb365b9baa5dc14790477d41053454bb35652ba
Author: Antonin Kral <antonin.kral@dtone.com>
Date:   Fri Aug 9 18:32:56 2019 +0200

    Feedback section