fixed a few annoying issues, killed some globals

"inexplicable crashes" on Win 7 due to my idiot self NOT using the `if`
statement that I needed,

WinDirStat/README.md

@@ -52,6 +52,21 @@ Major features:
 
 This is a Microsoft Visual Studio 2013 Project.
 
+=============================================================================
+# A few notes on style
+
+I have some (admittedly weird) style preferences, so I'll try to document them.
+
+1. I use [Ratliff-style indentation](http://en.wikipedia.org/wiki/Indent_style#Ratliff_style).
+  - I find it much easier to spot weird scope issues.
+  - I find it much easier to quickly skim code, all the while comprehending control-flow.
+2. I never throw exceptions.
+3. I never catch exceptions.
+4. I compile with exceptions **disabled**.
+  - Don't get me wrong, exceptions are a great feature of C++, but (sadly) they currently add too much bloat to code. 
+  - Exceptions theoretically can *improve* performance, but that's not the case just quite yet.
+  - When Visual Studio supports `noexcept`, I'll reconsider.
+5. I *ALWAYS* use braces in an `if`/`else` statement.
 =============================================================================
 How to create a resource dll.
 * **Don't**, this isn't a solved problem yet.

WinDirStat/windirstat/PageGeneral.cpp

@@ -60,12 +60,13 @@ BOOL CPageGeneral::OnInitDialog( ) {
 
 void CPageGeneral::OnOK( ) {
 	VERIFY( UpdateData( ) );
+	ASSERT( m_appptr != NULL );
 	const auto Options = GetOptions( );
 	//Compare with TRUE to prevent int->bool coercion
 	Options->m_followMountPoints    = ( ( m_followMountPoints    == TRUE ) ? true : false );
 	Options->m_followJunctionPoints = ( ( m_followJunctionPoints == TRUE ) ? true : false );
 	Options->m_showTimeSpent        = ( ( m_showTimeSpent        == TRUE ) ? true : false );
-	Options->SetHumanFormat         ( ( ( m_humanFormat          == TRUE ) ? true : false ) );
+	Options->SetHumanFormat         ( ( ( m_humanFormat          == TRUE ) ? true : false ), m_appptr );
 	Options->SetListGrid            ( ( ( m_listGrid             == TRUE ) ? true : false ) );
 	Options->SetListStripes         ( ( ( m_listStripes          == TRUE ) ? true : false ) );
 	Options->SetListFullRowSelection( ( ( m_listFullRowSelection == TRUE ) ? true : false ) );

WinDirStat/windirstat/PageGeneral.h

@@ -5,14 +5,12 @@
 #pragma once
 
 #include "stdafx.h"
+#include "windirstat.h"
 
 #ifndef WDS_PAGEGENERAL_H
 #define WDS_PAGEGENERAL_H
 
 
-
-
-
 class COptionsPropertySheet;
 class CPageGeneral;
 
@@ -28,7 +26,7 @@ class CPageGeneral final : public CPropertyPage {
 	CPageGeneral& operator=( const CPageGeneral& in ) = delete;
 	CPageGeneral( const CPageGeneral& in ) = delete;
 
-	CPageGeneral( ) : CPropertyPage( CPageGeneral::IDD ), m_followMountPoints( FALSE ), m_followJunctionPoints( FALSE ), m_humanFormat( FALSE ), m_listGrid( FALSE ), m_listStripes( FALSE ), m_listFullRowSelection( FALSE ), m_showTimeSpent( FALSE ) { }
+	CPageGeneral( CDirstatApp* app ) : CPropertyPage( CPageGeneral::IDD ), m_followMountPoints( FALSE ), m_followJunctionPoints( FALSE ), m_humanFormat( FALSE ), m_listGrid( FALSE ), m_listStripes( FALSE ), m_listFullRowSelection( FALSE ), m_showTimeSpent( FALSE ), m_appptr( app ) { }
 
 protected:
 
@@ -59,7 +57,7 @@ class CPageGeneral final : public CPropertyPage {
 
 	CButton   m_ctlFollowMountPoints;
 	CButton   m_ctlFollowJunctionPoints;
-
+	CDirstatApp* m_appptr;
 	DECLARE_MESSAGE_MAP()
 	afx_msg void OnBnClickedAnyOption( ) {
 		SetModified( );

WinDirStat/windirstat/PageTreemap.h

@@ -19,6 +19,8 @@
 //
 //CTreemap::Options;
 
+class CDirstatApp;
+
 class CPageTreemap final : public CPropertyPage {
 	DECLARE_DYNAMIC(CPageTreemap)
 	enum {