Implement the close and revert menu choices, as well as PC editor help

- Fix storing directions in save file as control characters

rsrc/dialogs/save-before-revert.xml

@@ -0,0 +1,10 @@
+<?xml version='1.0' encoding='UTF-8' standalone='no'?>
+<?xml-stylesheet href="dialog.xsl" type="text/xsl"?>
+<dialog defbtn='cancel'>
+	<button name='cancel' type='regular' def-key='esc' top='43' left='240'>Cancel</button>
+	<button name='revert' type='regular' top='43' left='175'>Revert</button>
+	<pict type='dlog' num='16' top='6' left='6'/>
+	<text top='6' left='49' width='256' height='32'>
+		Are you sure you want to discard all changes to your scenario?
+	</text>
+</dialog>

rsrc/dialogs/save-close.xml

@@ -0,0 +1,9 @@
+<?xml version='1.0' encoding='UTF-8' standalone='no'?>
+<?xml-stylesheet href="dialog.xsl" type="text/xsl"?>
+<dialog defbtn='save'>
+	<button name='save' type='large' top='31' left='230'>Save First</button>
+	<button name='quit' type='large' top='31' left='122'>Just Close</button>
+	<button name='cancel' type='regular' def-key='esc' top='31' left='54'>Cancel</button>
+	<pict top='9' left='9' type='dlog' num='23'/>
+	<text size='large' top='5' left='52' width='254' height='18'>Do you want to save before closing?</text>
+</dialog>

rsrc/dialogs/save-revert.xml

@@ -0,0 +1,8 @@
+<?xml version='1.0' encoding='UTF-8' standalone='no'?>
+<?xml-stylesheet href="dialog.xsl" type="text/xsl"?>
+<dialog defbtn='okay'>
+	<button name='okay' type='regular' top='41' left='272'>Revert</button>
+	<button name='cancel' type='regular' def-key='esc' top='41' left='203'>Cancel</button>
+	<pict top='9' left='9' type='dlog' num='23'/>
+	<text size='large' top='5' left='52' width='262' height='33'>Are you sure you want to discard any unsaved changes?</text>
+</dialog>