added accessibility stuff for mini calendar
Styles for table-less recent news/upcoming events blocks.
Merge branch 'master' of github.com:ITS-UofIowa/hpc.uiowa.edu
accessibility fixes for other calendar table displays
Merge branch 'master' of github.com:ITS-UofIowa/hpc.uiowa.edu
fix mini calendar title using h3 rather than h2