* include/functions_menu.php: Added menu_icon class.
* include/styles/menu.css: Split background style for menu icons.
Recovered menu colors.
* include/styles/pandora.css: Added body.pure element.
* include/styles/pandora_blackmetal.css,
include/styles/pandora_black.css: Improve to reuse pandora.css
* include/functions_ui.php: Use pure class on body element
on process_page_body(). Better comment when creating the css array on
process_page_head().
git-svn-id: https://svn.code.sf.net/p/pandora/code/trunk@1723 c3f86ba8-e40f-0410-aaad-9ba5e7f4b01f
cfa7020fb2