Add changelog entry

Signed-off-by: Georgios Andreadis <info@gandreadis.com>

CHANGELOG.md

@@ -18,6 +18,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 - Correctly sort claimed time slots in admin view [@cedricwilleken](https://gitlab.ewi.tudelft.nl/cedricwilleken)
 - Stop language button from overflowing on tablet screen size and landscape phone size [@cedricwilleken](https://gitlab.ewi.tudelft.nl/cedricwilleken)
+- Fix token login form overflow on mobile devices [@gandreadis](https://gitlab.ewi.tudelft.nl/gandreadis)
 
 ## [1.2.0] - (2020-05-20)
 ### Added