refactor: Updates check-in/out flash verbiage

Author: cbaudouinjr

app/controllers/manage/questionnaires_controller.rb

@@ -91,12 +91,12 @@ def check_in
             return
           end
           check_in_attendee
-          flash[:notice] = "Checked in #{@questionnaire.user.full_name}."
+          flash[:notice] = t(:checked_in, scope: 'messages', user: @questionnaire.user.full_name)
         elsif params[:check_in] == "false"
           check_out_attendee
-          flash[:notice] = "#{@questionnaire.user.full_name} no longer checked in."
+          flash[:notice] = t(:checked_out, scope: 'messages', user: @questionnaire.user.full_name)
         else
-          flash[:alert] = "No check-in action provided!"
+          flash[:alert] = t(:missing_check_in, scope: 'messages')
           redirect_to show_redirect_path
           return
         end

config/locales/en.yml

@@ -124,6 +124,10 @@ en:
         homepage_url: Homepage URL
         thanks_for_rsvp_message: Thanks For RSVP Message
         questionnaires_closed_message: Questionnaires Closed Message
+  messages:
+    checked_in: "%{user} has been checked in."
+    checked_out: "%{user} is no longer checked in."
+    missing_check_in: No check-in action provided!
   pages:
     manage:
       dashboard: