+ Sections can be unselected in silent mode too

+ Some documentation fixes
+ Transition between a normal page and a custom page no longer causes a flicker (between two custom pages it still does)
+ The completed sub-caption shows again


git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/trunk@1853 212acab6-be3b-0410-9dea-997c60f758d6

Contrib/InstallOptions/InstallerOptions.cpp

@@ -1004,8 +1004,8 @@ void showCfgDlg()
   lpWndProcOld = (void *) SetWindowLong(hMainWindow,GWL_WNDPROC,(long)ParentWndProc);
 
   ShowWindow(hConfigWindow, SW_SHOWNA);
-	SetFocus(hNextButton);
-
+  InvalidateRect(hConfigWindow,0,0);
+  SetFocus(hNextButton);
   LockWindowUpdate(0);
 
   g_done=0;