Revamp our handling of settings

The current handling of settings is a very roundabout leftover from the days of
gconf. Simplify and handle the setting more directly. At the same time move
handling of saving the window state to gsettings instead of saving it to a
config file.

tests/document-loader.c

@@ -21,7 +21,6 @@
  */
 
 #include "xed-document-loader.h"
-#include "xed-prefs-manager-app.h"
 #include <gio/gio.h>
 #include <gtk/gtk.h>
 #include <glib.h>
@@ -241,8 +240,6 @@ int main (int   argc,
 {
 	g_test_init (&argc, &argv, NULL);
 
-	xed_prefs_manager_app_init ();
-
 	g_test_add_func ("/document-loader/end-line-stripping", test_end_line_stripping);
 	g_test_add_func ("/document-loader/end-new-line-detection", test_end_new_line_detection);
 	g_test_add_func ("/document-loader/begin-new-line-detection", test_begin_new_line_detection);

tests/document-output-stream.c

@@ -16,13 +16,12 @@
  *
  * You should have received a copy of the GNU General Public License
  * along with xed; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, 
+ * Foundation, Inc., 51 Franklin St, Fifth Floor,
  * Boston, MA  02110-1301  USA
  */
 
 
 #include "xed-document-output-stream.h"
-#include "xed-prefs-manager-app.h"
 #include <gio/gio.h>
 #include <gtk/gtk.h>
 #include <glib.h>
@@ -125,8 +124,6 @@ int main (int   argc,
 {
 	g_test_init (&argc, &argv, NULL);
 
-	xed_prefs_manager_app_init ();
-
 	g_test_add_func ("/document-output-stream/empty", test_empty);
 
 	g_test_add_func ("/document-output-stream/consecutive", test_consecutive);

tests/document-saver.c

@@ -21,7 +21,6 @@
  */
 
 #include "xed-document-loader.h"
-#include "xed-prefs-manager-app.h"
 #include <gio/gio.h>
 #include <gtk/gtk.h>
 #include <glib.h>
@@ -684,8 +683,6 @@ int main (int   argc,
 
 	g_test_init (&argc, &argv, NULL);
 
-	xed_prefs_manager_app_init ();
-
 	g_printf ("\n***\n");
 	have_unowned = check_unowned_directory ();
 	have_unowned_group = check_unowned_group ();