First draft of a new HTML output generator.

HTML5 is valid in the sense of the W3C validator.
CSS is both inline and linked to online (Yahoo(s CDN) version of Pure.
Comments about the resulted HTML file are welcomed.
Merge branch 'master' of https://github.com/stephanepechard/goaccess into new-html
Full CSS inlining, minified as much as possible.

No more CDN :-)
Merge branch 'master' of https://github.com/allinurl/goaccess into new-html
Merge branch 'master' of https://github.com/stephanepechard/goaccess into new-html
Removed Yahoo's CDN stylesheet reference from generated report.
Updated code indentation and formatting.
Removed unnecessary HTML string parsing routines.
Changed HTML column header on VISITORS, BROWSERS and OS modules.
Fixed some html5 validation errors on generated report.