Chargen fix: Back sequence control.

Related to bug #894.
Eliminate double windows when using 'Back' from the review screen.
Force consistent back behavior (handling was changing after
a individual change button had been used).

apps/openmw/mwgui/charactercreation.cpp

@@ -285,7 +285,9 @@ namespace MWGui
     {
         MWBase::Environment::get().getWindowManager()->removeDialog(mReviewDialog);
         mReviewDialog = 0;
+        mCreationStage = CSE_ReviewBack;
 
+        MWBase::Environment::get().getWindowManager()->popGuiMode();
         MWBase::Environment::get().getWindowManager()->pushGuiMode(GM_Birth);
     }
 

apps/openmw/mwgui/charactercreation.hpp

@@ -104,6 +104,7 @@ namespace MWGui
         CSE_RaceChosen,
         CSE_ClassChosen,
         CSE_BirthSignChosen,
+        CSE_ReviewBack,
         CSE_ReviewNext
     };