Sawhat: Large commit

Own headers syntax and special chars moved to Parsedown
Small css / html clean
Css update for Prism
Added smooth scroll JS
Added anchor tag in Parsedown
Sawhat: Corrected href="#" link bug

Removed href="#" on link that toggle javascript to avoid smooth
scrolling.
Sawhat: forgot css with previous commit

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Sawhat: Modified margin on code blocks

Modified Prism css
Lib: Debug Parsedown

Corrected bad html block parsing
Sawhat: Updated "Help" card