Updated hardening doc.
Merge branch 'master' of https://github.com/irungentoo/ProjectTox-Core
Update av_api.md
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add some code blocks in the markup
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add some more shiny stuff
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and some more
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that looks better :)
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some markup was fucked up :P
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forgot one paragraph
Merge pull request #637 from blackwolf12333/master

Make the av_api.md look a bit better
Fixed possible issue.
The group chats we invite a friend to are now stored.