apparently due to raise condition

  This is used to avoid editing in the timesheet interval logger.
  Also now skipping an error if no taskPropertyPanel is defined.

  associated modal window to edit membership

- Implemented parsing of roles instead of percentages

  a single object

  - Now all dates in the Gantt Editor and in other places are
    relative to the server timezone
  - The server doesn't send any time zone information to the
    JavaScript client anymore.
  - The JavaScript client doesn't send any time zone information
    to the server anymore.
  As a result, a task that starts at 9:00 am when created
  by a computer in Europe will also start at 9:00 when viewed
  from a US computer

  that creates a numeric field with aggregation
  bottom-up in the Gantt Editor

  PO.model.finance.CostCenter

  field in a budget, showing a drop-down box of all tasks in the project

- Added BudgetItem tree store
- Added BudgetItem status store