old_contents: from django import forms
  from django.utils.translation import ugettext_lazy as _
  
  from . import models
  
  
  class GameControlAdminForm(forms.ModelForm):
      """
      Form for the GameControl object, designed to be used in GameControlAdmin.
      """
  
      # Ticks longer than 1 hours are possible but don't seem reasonable and would require addtional cleaning
      # logic below
      tick_duration = forms.IntegerField(min_value=1, max_value=3559, help_text=_('Duration of one tick in '
                                                                                  'seconds'))
  
      class Meta:
          model = models.GameControl
          exclude = ('current_tick',)
          help_texts = {
              'services_public': _('Time at which information about the services is public, but the actual '
                                   'game has not started yet'),
              'valid_ticks': _('Number of ticks a flag is valid for'),
              'registration_confirm_text': _('If set, teams will have to confirm to this text (e.g. a link to'
                                             'T&C) when signing up. May contain HTML.'),
              'min_net_number': _('If unset, team IDs will be used as net numbers'),
              'max_net_number': _('(Inclusive) If unset, team IDs will be used as net numbers'),
          }
  
      def clean_tick_duration(self):
          tick_duration = self.cleaned_data['tick_duration']
  
          # The timer of the gameserver's Controller component is configured with conditions for the minute
          # and seconds values
          if (tick_duration < 60 and 60 % tick_duration != 0) or \
             (tick_duration > 60 and tick_duration % 60 != 0):
              raise forms.ValidationError(_('The tick duration has to be a multitude of 60!'))
  
          return tick_duration
  
      def clean(self):
          services_public = self.cleaned_data['services_public']
          start = self.cleaned_data['start']
          end = self.cleaned_data['end']
  
          if services_public > start:
              raise forms.ValidationError(_('Services public time must not be after start time'))
          if end <= start:
              raise forms.ValidationError(_('End time must be after start time'))
  
new_contents: from django import forms
  from django.utils.translation import ugettext_lazy as _
  
  from . import models
  
  
  class GameControlAdminForm(forms.ModelForm):
      """
      Form for the GameControl object, designed to be used in GameControlAdmin.
      """
  
      # Ticks longer than 1 hours are possible but don't seem reasonable and would require addtional cleaning
      # logic below
      tick_duration = forms.IntegerField(min_value=1, max_value=3559, help_text=_('Duration of one tick in '
                                                                                  'seconds'))
  
      class Meta:
          model = models.GameControl
          exclude = ('current_tick',)
          help_texts = {
              'services_public': _('Time at which information about the services is public, but the actual '
                                   'game has not started yet'),
              'valid_ticks': _('Number of ticks a flag is valid for'),
              'registration_confirm_text': _('If set, teams will have to confirm to this text (e.g. a link to '
                                             'T&C) when signing up. May contain HTML.'),
              'min_net_number': _('If unset, team IDs will be used as net numbers'),
              'max_net_number': _('(Inclusive) If unset, team IDs will be used as net numbers'),
          }
  
      def clean_tick_duration(self):
          tick_duration = self.cleaned_data['tick_duration']
  
          # The timer of the gameserver's Controller component is configured with conditions for the minute
          # and seconds values
          if (tick_duration < 60 and 60 % tick_duration != 0) or \
             (tick_duration > 60 and tick_duration % 60 != 0):
              raise forms.ValidationError(_('The tick duration has to be a multitude of 60!'))
  
          return tick_duration
  
      def clean(self):
          services_public = self.cleaned_data['services_public']
          start = self.cleaned_data['start']
          end = self.cleaned_data['end']
  
          if services_public > start:
              raise forms.ValidationError(_('Services public time must not be after start time'))
          if end <= start:
              raise forms.ValidationError(_('End time must be after start time'))
  
subject: Add missing space to help text for registration confirm text