Moved docs to jekyll

This commit converts all old dokuwiki pages to markdown and allows to
generate a html version via markdown.

Since most stuff of this was autogenerated there might be some silly
escaping, but I think this can be fixed if the pages are updated by
hand.

Due to a bug in the markdown parser (maruku) markdown elements inside of
html tags need to be double escaped for now. (see:
https://github.com/bhollis/maruku/issues/97).

I fixed all the dead links along (and removed links to not created wiki
pages).
Fixed parsing of lua documentation

It did not strip off the second dash of the comments.
Removed dokuwiki files from the gitignore
Renamed start to index

This should prevent old links like doc.manasource.org turning invalid.
This will however make old start links invalid. But those should not
exist that often I hope.
Added an logo to the pages