Update Theme Meta

Signed-off-by: Simon Kraft <simon@krafit.de>
Moved CSS Reset to style CSS

Signed-off-by: Simon Kraft <simon@krafit.de>
Removed custom.css and colorbox

Signed-off-by: Simon Kraft <simon@krafit.de>
Removed admin options

Signed-off-by: Simon Kraft <simon@krafit.de>
Removed Toggle Button and updated h2 style

Signed-off-by: Simon Kraft <simon@krafit.de>
Removed .sections-header

Signed-off-by: Simon Kraft <simon@krafit.de>
Removed custom background and streamlined header code

Signed-off-by: Simon Kraft <simon@krafit.de>
Updated sections loop

Signed-off-by: Simon Kraft <simon@krafit.de>