New CSS classes for text alignment, nowrap, empty table cell, lighter
text.
Unnecessary or non standard html elements and attributes like "width",
"nowrap", "nobr", "b" removed or replaced. COLGROUP section for each table
added.
Merge branch 'html_strict'

Conflicts:
	img/style.css
	templates/default/balancelist.html
	templates/default/nodelist.html
Merge pull request #148 from maciejlew/master

Nowe klasy CSS, uporządkowanie kilku tabel.