The license of the files in static/fonts is the SIL Open Font License as shown below.
see: static/fonts/DotGothic16/OFL.txt
Copyright 2020 The DotGothic16 Project Authors (https://github.com/fontworks-fonts/DotGothic16)
This Font Software is licensed under the SIL Open Font License, Version 1.1.
This license is copied below, and is also available with a FAQ at:
http://scripts.sil.org/OFL
see: static/fonts/Kiwi_Maru/OFL.txt
Copyright 2020 The Kiwi Maru Project Authors (https://github.com/Kiwi-KawagotoKajiru/Kiwi-Maru)
This Font Software is licensed under the SIL Open Font License, Version 1.1.
This license is copied below, and is also available with a FAQ at:
http://scripts.sil.org/OFL