For keeping the active filter is now saved in a variable.

A new button is now displayed in comment list view for creators and participants. A click on the button will open
a menu with which the user can select a time period for the displayed comments. Sorting and filtering actions will
applied to the selected period. Displaying all existing comments is the default setting.

show motd dialog on login, add tap in http login request to broadcast login success via eventservice

This reverts merge request !495

This reverts merge request !493