[gnome-calculator] Fix CI build and first-load of currencies

[Robert Roth <robertroth src gnome org>]

commit 4b93ed6dc0e66b86cae22f4448898a2f5210b7f9
Author: Robert Roth <robert roth off gmail com>
Date:   Thu Jan 14 11:35:12 2021 +0200

    Fix CI build and first-load of currencies

 .gitlab-ci.yml            |  2 +-
 lib/currency.vala         | 14 ++++++++++++--
 src/gnome-calculator.vala |  1 +
 3 files changed, 14 insertions(+), 3 deletions(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 41cbd70b..18329fb9 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -25,7 +25,7 @@
   stage: test
   script:
     - broadwayd &
-    - GDK_BACKEND=broadway ninja -C _build install test
+    - GDK_BACKEND=broadway ninja -C _build test
 
 build:fedora:
   <<: *fedora_before_script
diff --git a/lib/currency.vala b/lib/currency.vala
index 0ee65563..79de43e3 100644
--- a/lib/currency.vala
+++ b/lib/currency.vala
@@ -17,7 +17,18 @@ public class CurrencyManager : Object
 {
     private List<Currency> currencies;
 
-    public int refresh_interval { get; set; }
+    protected int _refresh_interval;
+
+    public int refresh_interval {
+        get {
+            return _refresh_interval;
+        }
+        set {
+            loaded_rates = false;
+            _refresh_interval = value;
+            download_rates ();
+        }
+    }
 
     public signal void updated ();
 
@@ -27,7 +38,6 @@ public class CurrencyManager : Object
             return default_currency_manager;
 
         default_currency_manager = new CurrencyManager ();
-        default_currency_manager.refresh_interval = new Settings ("org.gnome.calculator").get_int 
("refresh-interval");
         default_currency_manager.currencies.append (new Currency ("AED", _("UAE Dirham"), "إ.د"));
         default_currency_manager.currencies.append (new Currency ("AUD", _("Australian Dollar"), "$"));
         default_currency_manager.currencies.append (new Currency ("BDT", _("Bangladeshi Taka"), "৳"));
diff --git a/src/gnome-calculator.vala b/src/gnome-calculator.vala
index 8f4a3ec1..6490af2d 100644
--- a/src/gnome-calculator.vala
+++ b/src/gnome-calculator.vala
@@ -123,6 +123,7 @@ public class Calculator : Gtk.Application
         last_opened_window = create_new_window (settings);
         // restore the first window position from the settings
         load_window_position (last_opened_window);
+        CurrencyManager.get_default ().refresh_interval = settings.get_int ("refresh-interval");
     }
 
     private MathWindow get_active_math_window ()