LUN-478: Cleanup long term exercise

[jira-to-github-migrator[bot]]

• Add words to long term exercise after a module is finished
• Add words of own vocabulary as soon as they are added. Decide if they should be removed/updated, after own vocabulary is deleted or edited.
• Add words that have been marked as favorites. Decide if they should be removed, after they are unmarked as favorites.
• Add release notes
• Add text that should be displayed on the info modal icon "Dein Lernforschritt"
• The Tab text "Wiederholen" is getting cut off on smaller screens (resolve this problem)
• remove eslint-disable no-unused-vars at the top of BottomTabNavigator
• Remove isDevMode on Modal from ExerciseFinishedScreen and remove skip case from testing.
• Fix singular/plural of "Wörter" in repetition overview screen (15 Wörter zum wiederholen bereit / 1 Wort zum wiederholen bereit)
• Fix the navigation bar badge: After finishing exercises or adding new words, the badge is not always updated correctly.
• Fix the navigation to the repetition screen, should always be updated, not working correctly.

Environment: - Linked issues: