feat: Translations for grid related menu items

The new main menu items were added to the MAIN_MENU list in local_settings.py, like this:

MAIN_MENU = [
    {"url": "/forecasts", "label": "Forecasts"},
    {
        "label": _("Risk maps"),
        "child_items": [
            {
                "url": "/spatial",
                "label": _("About risk maps"),
            },
            {
                "url": "/spatial/gridmap/SEPTREFHUM/",
                "label": _("Septoria reference humidity model"),
            }
        ],
    },
    {"url": "/observations", "label": "Observations"},
    {"url": "/messages", "label": "Messages"},
]

The messages were generated and compiled as follows (starting from the root of the project):

cd VIPSWeb
../manage.py makemessages -a
(add Norwegian translations to po file)
../manage.py compilemessages

VIPSWeb/locale/bg/LC_MESSAGES/django.po

@@ -19,7 +19,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: \n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2020-08-24 15:02+0200\n"
+"POT-Creation-Date: 2023-11-16 11:04+0100\n"
 "PO-Revision-Date: 2014-05-14 09:31+0200\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -30,77 +30,89 @@ msgstr ""
 "Plural-Forms: nplurals=2; plural=(n != 1);\n"
 "X-Generator: Poedit 1.6.5\n"
 
-#: VIPSWeb/local_settings.py:170
+#: local_settings.py:191
+msgid "Risk maps"
+msgstr ""
+
+#: local_settings.py:195
+msgid "About risk maps"
+msgstr ""
+
+#: local_settings.py:199
+msgid "Septoria reference humidity model"
+msgstr ""
+
+#: local_settings.py:210
 msgid "Cereals and oilseeds"
 msgstr ""
 
-#: VIPSWeb/local_settings.py:181
+#: local_settings.py:243
 msgid "Potato and vegetables"
 msgstr ""
 
-#: VIPSWeb/local_settings.py:187
+#: local_settings.py:253
 msgid "Fruits and berries"
 msgstr ""
 
-#: VIPSWeb/local_settings.py:194
+#: local_settings.py:268
 msgid "Other models and services"
 msgstr ""
 
-#: VIPSWeb/templates/404.html:3 VIPSWeb/templates/404.html:5
+#: templates/404.html:3 templates/404.html:5
 msgid "File not found"
 msgstr ""
 
-#: VIPSWeb/templates/404.html:6
+#: templates/404.html:6
 msgid "We are sorry, but the requested file was not found"
 msgstr ""
 
-#: VIPSWeb/templates/base.html:59
+#: templates/base.html:59
 msgid "Toggle navigation"
 msgstr "Навигация"
 
-#: VIPSWeb/templates/base.html:85
+#: templates/base.html:85
 msgid "Language"
 msgstr ""
 
-#: VIPSWeb/templates/base.html:96
+#: templates/base.html:96
 msgid "Administration"
 msgstr ""
 
-#: VIPSWeb/templates/base.html:98
+#: templates/base.html:98
 msgid "Sign out"
 msgstr ""
 
-#: VIPSWeb/templates/base.html:102
+#: templates/base.html:102
 msgid "Sign in"
 msgstr ""
 
-#: VIPSWeb/templates/base.html:119
+#: templates/base.html:119
 msgid "This is the default page contents."
 msgstr "Това е съдържанието на страницата по подразбиране. "
 
-#: VIPSWeb/templates/base.html:146
+#: templates/base.html:146
 msgid "This website uses cookies to give you the best possible user experience"
 msgstr ""
 
-#: VIPSWeb/templates/base.html:146
+#: templates/base.html:146
 msgid "Got it!"
 msgstr ""
 
-#: VIPSWeb/templates/base.html:146
+#: templates/base.html:146
 msgid "More info"
 msgstr ""
 
-#: VIPSWeb/templates/index.html:25 VIPSWeb/templates/index_old.html:25
+#: templates/index.html:25 templates/index_old.html:25
 msgid "Welcome"
 msgstr "Добре дошли"
 
-#: VIPSWeb/templates/index.html:42 VIPSWeb/templates/index_old.html:42
+#: templates/index.html:42 templates/index_old.html:42
 msgid ""
 "WARNING: We recommend using Chrome on Android handsets. Click OK to install "
 "Chrome, or Cancel to proceed without installing Chrome."
 msgstr ""
 
-#: VIPSWeb/templates/index.html:47
+#: templates/index.html:47
 msgid ""
 "WARNING: We suspect you are using Internet Explorer to view this site. VIPS "
 "is not designed to work with Internet Explorer, you may experience errors "
@@ -108,86 +120,86 @@ msgid ""
 "Microsoft Edge or Google Chrome."
 msgstr ""
 
-#: VIPSWeb/templates/index.html:78 VIPSWeb/templates/index_old.html:78
+#: templates/index.html:78 templates/index_old.html:78
 msgid "Surveillance and first observations"
 msgstr ""
 
-#: VIPSWeb/templates/index.html:78 VIPSWeb/templates/index_old.html:78
+#: templates/index.html:78 templates/index_old.html:78
 msgid "All observations"
 msgstr ""
 
-#: VIPSWeb/templates/index.html:84 VIPSWeb/templates/index_old.html:84
+#: templates/index.html:84 templates/index_old.html:84
 #, fuzzy
 #| msgid "Messages"
 msgid "Latest messages"
 msgstr "Съобщения"
 
-#: VIPSWeb/templates/index.html:84 VIPSWeb/templates/index_old.html:84
+#: templates/index.html:84 templates/index_old.html:84
 #, fuzzy
 #| msgid "Messages"
 msgid "All messages"
 msgstr "Съобщения"
 
-#: VIPSWeb/templates/index.html:97 VIPSWeb/templates/index_old.html:97
+#: templates/index.html:97 templates/index_old.html:97
 msgid "Crops"
 msgstr ""
 
-#: VIPSWeb/templates/index.html:114 VIPSWeb/templates/index.html:152
-#: VIPSWeb/templates/index_old.html:147
+#: templates/index.html:114 templates/index.html:152
+#: templates/index_old.html:147
 msgid "Forecasts"
 msgstr "Прогноза"
 
-#: VIPSWeb/templates/index.html:115
+#: templates/index.html:115
 msgid "Observations"
 msgstr ""
 
-#: VIPSWeb/templates/index.html:119 VIPSWeb/templates/index_old.html:115
+#: templates/index.html:119 templates/index_old.html:115
 msgid "High risk of infection"
 msgstr ""
 
-#: VIPSWeb/templates/index.html:120 VIPSWeb/templates/index_old.html:116
+#: templates/index.html:120 templates/index_old.html:116
 msgid "Medium risk of infection"
 msgstr ""
 
-#: VIPSWeb/templates/index.html:121 VIPSWeb/templates/index_old.html:117
+#: templates/index.html:121 templates/index_old.html:117
 msgid "No risk of infection"
 msgstr ""
 
-#: VIPSWeb/templates/index.html:122 VIPSWeb/templates/index_old.html:118
+#: templates/index.html:122 templates/index_old.html:118
 msgid "Missing data"
 msgstr ""
 
-#: VIPSWeb/templates/index.html:123 VIPSWeb/templates/index_old.html:119
+#: templates/index.html:123 templates/index_old.html:119
 msgid "No forecast available"
 msgstr ""
 
-#: VIPSWeb/templates/index.html:145 VIPSWeb/templates/index_old.html:140
+#: templates/index.html:145 templates/index_old.html:140
 #, fuzzy
 #| msgid "Forecasts"
 msgid "My forecasts"
 msgstr "Прогноза"
 
-#: VIPSWeb/templates/index.html:153 VIPSWeb/templates/index_old.html:148
+#: templates/index.html:153 templates/index_old.html:148
 msgid "Sort by"
 msgstr ""
 
-#: VIPSWeb/templates/index.html:153 VIPSWeb/templates/index_old.html:148
+#: templates/index.html:153 templates/index_old.html:148
 msgid "Weather station"
 msgstr ""
 
-#: VIPSWeb/templates/index.html:153 VIPSWeb/templates/index_old.html:148
+#: templates/index.html:153 templates/index_old.html:148
 msgid "Pest"
 msgstr ""
 
-#: VIPSWeb/templates/index.html:153 VIPSWeb/templates/index_old.html:148
+#: templates/index.html:153 templates/index_old.html:148
 msgid "Model"
 msgstr ""
 
-#: VIPSWeb/templates/index.html:154 VIPSWeb/templates/index_old.html:149
+#: templates/index.html:154 templates/index_old.html:149
 msgid "Select crops or zoom in to see list of forecasts"
 msgstr ""
 
-#: VIPSWeb/templates/index_old.html:47
+#: templates/index_old.html:47
 msgid ""
 "WARNING: We suspect you are using Internet Explorer to view this site. VIPS "
 "is not designed to work with Internet Explorer, you may experience errors "
@@ -195,7 +207,7 @@ msgid ""
 "Google Chrome."
 msgstr ""
 
-#: VIPSWeb/templatetags/template_helper.py:75
+#: templatetags/template_helper.py:75
 #, fuzzy
 msgid "Information"
 msgstr "Друго действие"