This applies a new structure for the main doc/ and modules/*/doc tree with
01-About.md
02-Installation.md
...
This allows us to link from the main doc directory into module specific
documentation entries.
Furthermore table formatting, examples, and missing settings have been added
where applicable.
This patch also takes care about proper URL anchors and file names and directories.
fixes#2950
* Move HTML links (<a>...</a>) to the end of the header lines
* This is necessary to allow mkdocs to parse headers correctly and display them in the TOC
* Following sed command was used: sed -i .bu 's/\(<a.*a>\) \(.*\)/\2 \1/g' $filename
