- 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

  in able to deal with ADR (and other...) configurations where the status
  "Open" has been disabled

  main project as root or not

  not find in their respective stores

- Added default configuration for columns in
  intranet-gantt-editor

  when failed to load store

  sprint on the same location (one of them being the background...)