Fix translations at load_page plugin

To be translatable text field should be marked
with @i18n. Also these messages should be provided by
i18n_messages.

Fixes: https://pagure.io/freeipa/issue/7559
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Petr Vobornik <pvoborni@redhat.com>

install/ui/src/freeipa/plugins/load_page.js

@@ -24,10 +24,10 @@ define([
     'dojo/on',
     '../facets/Facet',
     '../phases',
-    '../reg'
-
+    '../reg',
+    '../text'
    ],
-   function(declare, lang, on, Facet, phases, reg) {
+   function(declare, lang, on, Facet, phases, reg, text) {
 
     /**
      * Load Facet plugin
@@ -46,7 +46,7 @@ define([
             {
                 $type: 'activity',
                 name: 'activity',
-                text: 'Loading',
+                text: text.get('@i18n:login.loading', 'Loading'),
                 visible: true
             }
         ]
@@ -64,4 +64,4 @@ define([
     });
 
     return load;
-});
+});

ipaserver/plugins/internal.py

@@ -352,6 +352,7 @@ class i18n_messages(Command):
                 "tickets (obtainable via kinit) and <a href='http://${host}/"
                 "ipa/config/ssbrowser.html'>configured</a> the browser "
                 "correctly, then click 'Log in'."),
+            "loading": _("Loading"),
             "loading_md": _("Loading data"),
             "login": _("Log in"),
             "login_certificate": _("Log In Using Certificate"),