Fix some translations

core/views/forms.py

@@ -4,7 +4,7 @@ from django.db import transaction
 from django.core.exceptions import ValidationError
 from django.contrib.auth import logout, login, authenticate
 from django.forms import CheckboxSelectMultiple, Select, DateInput, TextInput, DateTimeInput
-from django.utils.translation import ugettext as _
+from django.utils.translation import ugettext_lazy as _
 from phonenumber_field.widgets import PhoneNumberInternationalFallbackWidget
 from ajax_select.fields import AutoCompleteSelectField
 

sas/views.py

@@ -3,7 +3,7 @@ from django.http import HttpResponseRedirect, HttpResponse
 from django.core.urlresolvers import reverse_lazy, reverse
 from django.views.generic import ListView, DetailView, RedirectView, TemplateView
 from django.views.generic.edit import UpdateView, CreateView, DeleteView, ProcessFormView, FormMixin, FormView
-from django.utils.translation import ugettext as _
+from django.utils.translation import ugettext_lazy as _
 from django.utils import timezone
 from django.conf import settings
 from django.forms.models import modelform_factory