Refs #298: change the DOCTYPE to HTML5
Refs #298: introduce HTML5 tag header
Refs #298: introduce footer tag; fix footer for IE8
Refs #298: fix header for IE8
Refs #298: remove support for Internet Explorer 8
Refs #298: create section site-identity
Refs #298: create sections for widgetBox and missionStatement
Refs #298: remove useless div#Container from pageLayout
Refs #298: put all main content inside div#contentProper, on desktop and mobile
Refs #298: remove div.clearer from homepage templates
Refs #298: introduce sections on Polar homepage
Refs #298: introduce section for banner
Refs #298: introduce sections for Contact page
Refs #298: introduce sections for Contribuie page
Refs #298: introduce sections for Topul volutarilor page
Refs #298: introduce sections for Articole page
Refs #298: introduce sections for Ghid de exprimare page; warning: some sections are outside contentProper
Refs #298: introduce sections for Cuvântul zilei page; synchronise table width with page width
Refs #298: introduce sections for Cuvântul lunii page
Refs #298: introduce sections to Cuvinte aleatoare page