styling

[hahnjo@hahnjo.de: Some code style]
Signed-off-by: hahnjo <hahnjo@hahnjo.de>

Conflicts:
	index.html
Added a little intro text with some information

[hahnjo@hahnjo.de: Code style, translatable and better loading of the
friends]
Signed-off-by: hahnjo <hahnjo@hahnjo.de>
added loading banner

Conflicts:
	index.html
l10n: Update German translation