style: shorter doc names, correct rootrelink

Signed-off-by: Stephan Linz <stephan.linz@clondiag.com>
style: remove sphinx extension globaltoc

Signed-off-by: Stephan Linz <stephan.linz@clondiag.com>
style: static content centralized, switch to DejaVu

Signed-off-by: Stephan Linz <stephan.linz@clondiag.com>
style: templates centralized

Signed-off-by: Stephan Linz <stephan.linz@clondiag.com>
style: fixed TOC in html

Signed-off-by: Stephan Linz <stephan.linz@clondiag.com>
style: merge all styles into private theme sphinxdoc-ext

Signed-off-by: Stephan Linz <stephan.linz@clondiag.com>
style: sphinxdoc-ext: show license referer on demand

Signed-off-by: Stephan Linz <stephan.linz@clondiag.com>
content: add lefal notice and refere to CC-BY-SA-3.0

Signed-off-by: Stephan Linz <stephan.linz@clondiag.com>
style: sphinxdoc-ext: remove wrong committed file

Signed-off-by: Stephan Linz <stephan.linz@clondiag.com>