Merge pull request #4829 from EricDunsworth/v3.0-link-rel-schema-dcterms

All pages: Added schema.dcterms link rel into head. Resolves gh-4442.
Corrected GC Web Usability theme footer links
Merge pull request #4878 from pjackson28/fixfooterlinks

Corrected GC Web Usability theme footer links
GC Web Usability theme: Shortened footer links to domain names where possible
Merge pull request #4880 from pjackson28/shortenfooterlinks

GC Web Usability theme: Shortened footer links to domain names where possible
Tabbed interface: Now ignoring keystrokes modifed by the control, alt and meta keys
Merge pull request #4883 from pjackson28/ignoremodifiedkeys

Tabbed interface: Now ignoring keystrokes modifed by the control, alt and meta keys
Demos/Documentation: Fixed various broken links and HTML5 markup issues.
Merge pull request #4900 from EricDunsworth/v3.0-broken-link-fixes

Demos/Documentation: Fixed various broken links and HTML5 markup issues.
Documentation: Removed openplus.ca row from table in accolades page.
Merge pull request #4911 from EricDunsworth/v3.0-broken-link-fixes

Documentation: Removed openplus.ca row from table in accolades page.
Calendar of Events: Removed role='application'
Merge pull request #4923 from pjackson28/removeapplicationrolecalendar

Calendar of Events: Removed role='application'
GCWU theme: Removed box shadow from site menu sub-menu
Merge pull request #4926 from pjackson28/removeboxshadowmenuv30

GCWU theme: Removed box shadow from site menu sub-menu
GCWU and Intranet themes: Changed lines separating menu bar links to grey (fixes #4919)
Merge pull request #4930 from pjackson28/fixmenulinesbetween

GCWU and Intranet themes: Changed lines separating menu bar links to grey (fixes #4919)
GCWU and Intranet themes: Fixed menu link separator for links in active state
Merge pull request #4933 from pjackson28/fixmenulineseparator

GCWU and Intranet themes: Fixed menu link separator for links in active state
Documentation: Renamed "Examples pratiques" links to "Exemples pratiques" in French pages.