ITC-87,88,98: Got the single post template structured properly, which fixes the sidebar and gets off-canvas stuff working properly
ITC-99: Post content more or less styled (news posts only)
refs ITC-113: made the class of the main content area consistent with other templates for unified styling
ITC-112, ITC-113: fixed off-canvas bar covering content on mobile for both pages and posts
ITC-109: comment form given a touch of style
minor change to homepage news title top margin
ITC-102: Styled the comments section for all pages
Explicity defined height available for comment author pictures to help the sidebar height get set properly