big clean up of html/css and adjustments in js and .eex files + left menu now is html valid

Signed-off-by: eksperimental <eksperimental@users.noreply.github.com>
remove deprecated stuff: TOC, filecontents, ul.summary, and other stuff

Signed-off-by: eksperimental <eksperimental@users.noreply.github.com>
update formatter tests

Signed-off-by: eksperimental <eksperimental@users.noreply.github.com>
fix issues and more enhancements

Signed-off-by: eksperimental <eksperimental@users.noreply.github.com>
update outdated vendor extension

Signed-off-by: eksperimental <eksperimental@users.noreply.github.com>
final reformat of css files

Signed-off-by: eksperimental <eksperimental@users.noreply.github.com>
Merge pull request #174 from eksperimental/struct_ok+

Bit Cleanup + valid HTML menu