Improved accounting for bottom continue messages for pagination

Bottom Message (below text) fix and pagination improvements
Include RNO separator in ‘BottomContent’ calculation
Reset ‘BottomContent’ for each page & added ruler for bottom of page

PROMS/Volian.Print.Library/vlnRNOSeparator.cs

@@ -74,6 +74,7 @@ namespace Volian.Print.Library
 			}
 			else
 				Rtf2Pdf.TextAt(cb, IParagraph, XOffset, yLocation, Width, 100, "", yBottomMargin);
+			MyPageHelper.BottomContent = yLocation-SixLinesPerInch;
 			return yPageStart;
 		}
 	}