Archived reservations break the calendar

[orenyk]

I, [2018-06-26T23:32:45.593280 #29837]  INFO -- : Completed 500 Internal Server Error in 214ms (ActiveRecord: 13.9ms)
F, [2018-06-26T23:32:45.594596 #29837] FATAL -- :   
F, [2018-06-26T23:32:45.594675 #29837] FATAL -- : ActionView::Template::Error (undefined local variable or method `archived_clr' for #<#<Class:0x00000006996aa0>:0x0000000548adf0>):
F, [2018-06-26T23:32:45.594877 #29837] FATAL -- :     11:   json.title res.send(@name_method).name
    12:   json.start res.start_date
    13:   json.end res.end_date + 1.day
    14:   json.backgroundColor res.overdue ? overdue_clr : eval("#{res.status}_clr")
    15:   json.borderColor res.overdue ? overdue_clr : eval("#{res.status}_clr")
    16:   json.allDay true
    17:   json.url reservation_url(res, format: :html)
F, [2018-06-26T23:32:45.594982 #29837] FATAL -- :   
F, [2018-06-26T23:32:45.595055 #29837] FATAL -- : app/views/application/calendar.json.jbuilder:14:in `eval'
app/views/application/calendar.json.jbuilder:14:in `eval'
app/views/application/calendar.json.jbuilder:14:in `block in _app_views_application_calendar_json_jbuilder__3694586438196376487_57274080'
app/views/application/calendar.json.jbuilder:9:in `_app_views_application_calendar_json_jbuilder__3694586438196376487_57274080'