Make sure planning document is up to date

[hanna-212]

Priority (1-3): 1

Impediment:

Prof. Dr. Riehle mentioned, that

• the sprint goal sheet was not current
• we should product glossary could be richer
• burn down chart for the final project release was missing

Notes:

• [x] remind Rebecca and Irene to update the Planning Document (and help them if needed)

Solution:

• [x] Sprint goal sheet is consistent with the release plan
• [x] product glossary is updated
• [x] burn down chart for final project release is there

[hanna-212]

everything mentioned is updated :)