Bump versionCode 7008

Merge pull request #375 from PhilKes/fix/notify-autosave-backup-error

Fix german auto_backup_error_message translation

Fix AutoBackup temp dirs cleanup and send error notification

Fix periodInDays and maxBackups when periodic backup is enabled

Merge pull request #376 from PhilKes/fix/textview-color-api28

Fix TextView selectionHandleColor for API smaller 28

Merge pull request #374 from PhilKes/fix/backuponsave-import

Refresh backupOnSave on settings import

Merge pull request #370 from PhilKes/translation/update

Update fr/strings.xml

Merge pull request #369 from PhilKes/fix/startview-import-refresh

Fix startView refresh on import

Add CHANGELOG.md generator

Update .gitignore