[geary/wip/775956-dbus-activation] Revert ignoring GSettings when determing if background svc

[Michael Gratton <mjog src gnome org>]

commit 7792f813873efe1977bf89116ee05c8be65073f9
Author: Michael Gratton <mike vee net>
Date:   Wed Apr 10 00:53:58 2019 +1000

    Revert ignoring GSettings when determing if background svc
    
    This lets the app keep running in the backround even if not started
    as a dbus service. Useful for testing, or if accidentally quit, if
    nothing else.

 src/client/application/geary-application.vala | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
---
diff --git a/src/client/application/geary-application.vala b/src/client/application/geary-application.vala
index ae383d73..570a7380 100644
--- a/src/client/application/geary-application.vala
+++ b/src/client/application/geary-application.vala
@@ -129,7 +129,12 @@ public class GearyApplication : Gtk.Application {
      * closed, instead of exiting as usual.
      */
     public bool is_background_service {
-        get { return (this.flags & ApplicationFlags.IS_SERVICE) != 0; }
+        get {
+            return (
+                (this.flags & ApplicationFlags.IS_SERVICE) != 0 ||
+                this.config.startup_notifications
+            );
+        }
     }
 
     private string bin;