#33 Appointment_show module was added to backbone doctor cabinet. Current appointment notification was moved under the menu panel.
#33 Link to appointment show was added to all appointments page
#33 Link to processing appointment show was added to processing appointment notification. processing_appointment method was added to doctor model (it getting `id` field only). Fix DoctorUser.is_attending? - the needless ordering by date was excluded.
#33 `is_processing?` method was added to appointment event model. Complete/Begin appointment buttons were added to appointment show page in doctor cabinet.
#33 Handlers for start/stop button were added to appointment show page.
#33 In appointment event model every hash-formed constants were replaced to single  apostrophe-form.
#33 Starting and stopping appointments. Start and stop button were replaced to self-sufficient partial
Close #33 New columns were added for event model - real_start_time and real_start_end. A time accounting was added for starting appointment and  stopping  of appointments'   - now is counting real data_time and date_end.