filebrowser[-qt]: Use term Album Art instead of Cover Art

Suggested by French translator Alain-Olivier (yahoe.001) via Transifex.

Author: radioactiveman

src/filebrowser-qt/filebrowser-qt.cc

@@ -208,7 +208,7 @@ void FileBrowserWidget::contextMenuEvent(QContextMenuEvent * event)
         menu->addAction(newAction(N_("_Open Folder Externally"), "folder", menu,
                                   &FileBrowserWidget::openFolder));
     if (searchCover(m_coverPath))
-        menu->addAction(newAction(N_("Open Co_ver Art"), "image-x-generic",
+        menu->addAction(newAction(N_("Open Al_bum Art"), "image-x-generic",
                                   menu, &FileBrowserWidget::openCover));
 
     menu->setAttribute(Qt::WA_DeleteOnClose);

src/filebrowser/filebrowser.cc

@@ -473,7 +473,7 @@ static void menu_append_open_folder_item(GtkWidget * menu, const char * uri)
 
 static void menu_append_open_cover_item(GtkWidget * menu, const char * uri)
 {
-    menu_append_item(_("Open Co_ver Art"), "image-x-generic",
+    menu_append_item(_("Open Al_bum Art"), "image-x-generic",
                      (GCallback)open_cover, g_strdup(uri), menu);
 }