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C# Code Generation Bug Fix and Improved "Jump To" Functionality

There was a bug in the C# code generation involving improperly escaped quotes. I'm using the string literal syntax with the @ sign. And when you do that, quotes are no longer escaped with \". Instead, it works more like VB with double quotes "" where the first quote escapes the second. I overlooked this but a fellow user of Regex Hero pointed this out to me today (thanks Jason). And after a small code change it works properly now.

Secondly, I made a small improvement to the universal match count / group count / stepper control in Regex Hero. The up/down buttons will normally select a match and scroll to it. But when there's only 1 match, then the up/down buttons are disabled. So in the event that there's only 1 match you can now click the text that says "1 match" and that will select and scroll to the match. It's a simple change but I think it helps.

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