Add note about delay between transaction and... - Kanboard#1378

[Crasher508]

Add an important note to usersuite

[lukasjuhrich]

Merged, thanks; I just compiled the translations as is specified in the makefile: https://github.com/agdsn/sipa/blob/3a661def60d8420f51873af546e088bbcac736a8/Makefile#L25