avoid finding wrong positives when searching for JavaScript

- Fixed default type of task dependencies for compatibility

- Fixed issue with wrong week numbers

  - 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

  - Now collecting overassignments before redraw
    in a hash of hashes, effectively reducing the
    complexity from n^3 to n*log(n)*log(n)
  - Now showing overassignments within a project
  - ToDo: Not yet calculating percentages

  Otherwise it's too small to be resized

  rather then duration when delivering the page

  change together). A move should trigger just a schedule, but not a
  change of duration (resizing the task), as this affects the
  assigned resources

- Fixed display of dependency properties to include lag

  DependencyPropertyPanel

  that appeared after creating a new dependency

  That seems to be sufficient and doesn't overlay
  that much a finish-to-finish dependency arrow

  entries in the list of changedNodes

  PO.model.finance.CostCenter

  in Chrome