refactored project detailed info panes (now docs, tracking, project info, notes):
- documents and tracker button added to documents and tracking panes
- added last 10 modified items notification
- refactored last modified docs ui
Merge branch 'master' of github.com:collective/collective.simplemanagement

* 'master' of github.com:collective/collective.simplemanagement:
  minor fix
  allow multiple submit in add story form
  allow multiple submit in booking form