Andreas Traczyk authored Oct 24, 2017 and Kateryna Kostiuk committed Oct 26, 2017

- Applies a centered style to the generated message cells.

Change-Id: I71fa4221194e2a974c787d710c2825a76c99f5c4
Reviewed-by: Kateryna Kostiuk <kateryna.kostiuk@savoirfairelinux.com>