Implemented window_staff_peep_fire. Added new window class WC_FIRE_PROMPT.
Added order and stats events for window_staff_peep.
Renamed window_staff_peep_mouse_up to window_staff_peep_mouseup.
Implemented mouseup for window_staff_peep.
Added window_staff_peep_stats_resize.
Merge branch 'master' of https://github.com/IntelOrca/OpenRCT2
Implemented window_staff_peep_overview_resize.
Implemented overview_mousedown.
Implemented overview_dropdown.
Implemented overview_update.
Implemented stats_update and orders_update.
Merge pull request #384 from hexdec/master

More window staff peep functions