Print activity details only once

## Background

When using multiple time slots, the activity contents are reused for all occurrences of the activity. This is a valuable feature that reduces efforts when planning recurring activities like meals, breaks or meetings:


Downloading the program prints the activity details once for each time slot. The only difference is the time information in the top right corner. This makes the printed file larger than need be.

Example occurence 1:

Example occurence 2:

## Proposal

Reduce redundancy by only printing activities once per program. Repetitions of the activity can be seen on the picasso.