Add Side Story to "Notification Center"

I never missed a day of logging in (1,457 days). With that being said, I also never missed a side story. Because of the new set-up we have and "Notification Center" that I trusted, I didn't realize I missed Rinak's Side story.

Please add a reminder for Side Story, as it is very easy to forget with the new layout.

Also add Huche in the labyrinth while you are at it ;)