Remove CsQuery (and replace Json.Net)

[ArcticEcho]

... for performance reasons.

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• [x] Replace Newtonsoft.Json with ServiceStack.Text.
• [ ] Replace CsQuery with regex.

[thomas-daniels]

What are you going to use instead?

[ArcticEcho]

Well, after thoroughly reviewing all CsQuery usages (and the profiler reports), it would seem that using Regex would be a suitable replacement (it'll require a bit of work, but the performance gain will be worth it).

And as for Newtonsoft.Json, I'll be switching to ServiceStack.Text.