Use lazy gettext in models and forms to allow things to be shown in Spanish.

apps/map/models.py

@@ -5,7 +5,7 @@ from django.contrib.auth.models import User
 from django.contrib.gis.db import models
 from django.db import connection
 from django.template.defaultfilters import slugify
-from django.utils.translation import ugettext as _
+from django.utils.translation import ugettext_lazy as _
 
 from django_extensions.db.fields import AutoSlugField
 from django_countries.fields import CountryField
@@ -657,7 +657,7 @@ class CaseStudy(models.Model):
     # Should be filled in if generation_technology was answered as bio-energy
     biomass_detail = models.CharField(
         verbose_name=_("Bio-energy feedstock"),
-        help_text="<div class='text-muted'>" + _(
+        help_text=_("<div class='text-muted'>"
             "<p>Please describe the source of the fuel and how it is processed/used."
             " Please consider:</p>\n"
             "<ul>\n"
@@ -669,7 +669,7 @@ class CaseStudy(models.Model):
             "</ul>\n"
             "<p>We do not expect users to know this information, but if you do "
             " it may be useful to give a fuller picture.</p>"
-        ) + "</div>",
+        "</div>"),
         max_length=200,
         blank=True
     )