Updated forum to html5 compliance and validated

Updated forum to html5 compliance and validated
Missed 2 files for latestpostblock - now validated

Missed 2 files during validation.  Now validates for html5
HTML5 validated default theme files

HTML5 validated default theme files by hand.  Did not touch admin
directories or files as they are normally not seen by anyone but
administrators with granted permissions.
Filemgmt plugin html5 validated

Filemgmt plugin thtml files validated, but needs the php files validated
HTML5 validated defualt content for static pages

HTML5 validated defualt content for static pages.  Verified installs
content properly after updating.
Merge branch 'master' of https://github.com/spacequad/glfusion-150 into spacequad-master