Suggestion: Use EasyMDE and ParsedownExtended

[ByteSturm]

Hey, I'm currently playing around with the tool.

I noticed that you are using SimpleMDE and Parsedown to edit and display the md files. I suggest using EasyMDE instead of SimpleMDE as SimpleMDE is not actively developed anymore.

Also I suggest using ParsedownExtended in addition to Parsedown as it comes with many handy features for a wiki / documentation tool and is able to display KaTeX as requested in issue 16 :)

[Zavy86]

Hi, thank you so much for the tips. As soon as I have a moment I'll try!

[Zavy86]

Replaced SimpleMDE with EasyMDE in branch /feature/easy-markdown-editor

[Zavy86]

Replaced Parsedown and add Extra