SQL storage, so there will be a deterministic update
  order.
  This fixes a bug in cosine where im_projects was updated
  after im_timesheet_tasks, thus overwriting the percent_
  completed values set by a trigger on im_timesheet_tasks

- Added ns_log Error statements

  JSON messages can't have multiple lines...

  faking users

  Added feature to load partial trees, as used by Sencha

  but not stored in the DB yet

  Beautified code, removing duplicated code

  Fixed issue that error messages weren't passed back to the server correctly

  Fixed "GanttEditor: Error saving data on the server side: No authentication found ('')" bug.
  Apparently Chrome sometimes sends out PUT XHTTP calls without cookies.
  So ]po[ then correctly identifies a non-authenticated session.
  As a workaround, I have added auth_token authentication in the SenchaPreference store,
  so that the calls are authenticated, even if the cookies should disappear for some
  reason.

  - Added CostCenter field
  - Added CostCenter model and store

  - Improved error message
  - Added remaining columns to GanttTreeStore (material)