Fixed issues
- Improved general stability.
- Improved the import of MS Project files.
- Filtering views by predecessor or successor activities did not work.
- In the utilization view of documents with sub-projects, the row "No resources assigned" was sometimes not shown.
- Publishing via SMTP did not work with some e-mail providers.
- Bottom-up distributed budgets were not always respected in the budget/cost balances.
- Via AppleScript, an activity could not be defined as a milestone.
