rearrange helper functions

app/helpers/application_helper.rb

@@ -1,5 +1,4 @@
 module ApplicationHelper
-  ##
   # Returns a string build from the start and end date of the given conference.
   #
   # If the conference is only one day long
@@ -34,23 +33,6 @@ module ApplicationHelper
     result
   end
 
-  # Returns time with conference timezone
-  def time_with_timezone(time)
-    time.strftime('%F %R') + ' ' + @conference.timezone.to_s
-  end
-
-  ##
-  # Checks if the voting has already started, or if it has already ended
-  #
-  def voting_open_or_close(program)
-    return if program.voting_period?
-    if program.voting_start_date > Time.current
-      return 'Voting period has not started yet!'
-    else # voting_end_date > Date.today because voting_start_date < voting_end_date
-      return 'Voting period is over!'
-    end
-  end
-
   # Set resource_name for devise so that we can call the devise help links (views/devise/shared/_links) from anywhere (eg sign_up form in proposals#new)
   def resource_name
     :user
@@ -130,9 +112,21 @@ module ApplicationHelper
     object
   end
 
-  def quantity_left_of(resource)
-    return '-/-' if resource.quantity.blank?
-    "#{resource.quantity - resource.used}/#{resource.quantity}"
+  def normalize_array_length(hashmap, length)
+    hashmap.each do |_, value|
+      if value.length < length
+        value.fill(value[-1], value.length...length)
+      end
+    end
+  end
+
+  # Same as redirect_to(:back) if there is a valid HTTP referer, otherwise redirect_to()
+  def redirect_back_or_to(options = {}, response_status = {})
+    if request.env['HTTP_REFERER']
+      redirect_to :back
+    else
+      redirect_to options, response_status
+    end
   end
 
   def concurrent_events(event)