Fixes build error due to internal header cleanup in Qt 5.11.
Gentoo-bug: https://bugs.gentoo.org/662480

--- a/AccountsDialog.cc	2017-06-12 12:27:59.964042017 +0200
+++ b/AccountsDialog.cc	2018-08-17 23:51:40.559225179 +0200
@@ -21,6 +21,7 @@
  *************************************************************************************************/
 
 
+#include <QAction>
 #include <QWidget>
 #include <QDialog>
 #include <QListWidget>
--- a/QuickpostTemplateDialog.cc	2017-06-12 12:28:00.244038449 +0200
+++ b/QuickpostTemplateDialog.cc	2018-08-17 23:55:11.793673907 +0200
@@ -20,6 +20,7 @@
  *****************************************************************************/
 
 
+#include <QAction>
 #include <QWidget>
 #include <QDialog>
 #include <QListWidget>