Set cockatrice path settings to use appdata instead of instdir

Putting user stuff in program files is bad

nsis/cockatrice.nsi

 !include "MUI2.nsh"
 !include "FileFunc.nsh"
 
-!define /date TIMESTAMP "%Y%m%d" 
+!define /date TIMESTAMP "%Y%m%d"
 !searchparse /file ../build/cockatrice/version_string.cpp '= "' VERSION '";'
 
 Name "Cockatrice"
@@ -52,7 +52,7 @@ Section "Application" SecApplication
 
 	SetOutPath "$INSTDIR\zonebg"
 	File /r ..\zonebg\*.*
-	
+
 	SetOutPath "$INSTDIR\plugins"
 	SetOutPath "$INSTDIR\plugins\codecs"
 	File "${QTDIR}\plugins\codecs\qcncodecs4.dll"
@@ -67,7 +67,7 @@ Section "Application" SecApplication
 
 	SetOutPath "$INSTDIR\sounds"
 	File /r ..\sounds\*.*
-	
+
 	SetOutPath "$INSTDIR\translations"
 	File /r ..\build\cockatrice\*.qm
 
@@ -83,10 +83,10 @@ Section "Application" SecApplication
 SectionEnd
 
 Section "Update configuration" SecUpdateConfig
-	WriteRegStr HKCU "Software\Cockatrice\Cockatrice\paths" "carddatabase" "$INSTDIR\cards.xml"
-	WriteRegStr HKCU "Software\Cockatrice\Cockatrice\paths" "decks" "$INSTDIR\decks"
-	WriteRegStr HKCU "Software\Cockatrice\Cockatrice\paths" "pics" "$INSTDIR\pics"
-	WriteRegStr HKCU "Software\Cockatrice\Cockatrice\sound" "path" "$INSTDIR\sounds"
+	WriteRegStr HKCU "Software\Cockatrice\Cockatrice\paths" "carddatabase" "$APPDATA\cards.xml"
+	WriteRegStr HKCU "Software\Cockatrice\Cockatrice\paths" "decks" "$APPDATA\decks"
+	WriteRegStr HKCU "Software\Cockatrice\Cockatrice\paths" "pics" "$APPDATA\pics"
+	WriteRegStr HKCU "Software\Cockatrice\Cockatrice\sound" "path" "$APPDATA\sounds"
 SectionEnd
 
 Section "Start menu item" SecStartMenu