fixing w3c validation errors
updated ul on footer
removed sections for commit button
changed non-js hint from div to span with block class
changed p to div for w3c compliance
updated sections on feedback
changed section structure
added section-header class to h2
added style to correct heading size on tech help
merge master into html_validation_fixes
Merge branch 'master' into html_validation_fixes
removed all errors
removed SelectAddress name
removed FindUKPostcode name
Merge pull request #492 from ministryofjustice/html_validation_fixes

Html w3c validation fixes