Added Markdown and Pygment

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Added HTML column to submissions for converted result ino order to keep the original as well.
Added Markdown and Pygment

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Added HTML column to submissions for converted result ino order to keep the original as well.
Merge remote-tracking branch 'origin/markdown' into markdown

Conflicts:
	app/views/tasks/show.html.erb
Added CSS for Git Style Syntax colors
Merge pull request #6 from CyberStrike/markdown

Markdown with Pygment