CON-1780 Wikia logo should be included only once and reused
CON-1780 Removing GlobalFooter.scss to simplify styles structure
CON-1780 Load Wikia logo even if Venus extension is not in use
CON-1780 Removing bottom page padding and page border
CON-1780 Adjust method name getLogoUrl => getCentralWikiUrl
CON-1780 Adjust variable name nav-background-color => global-wikia-background-color
CON-1780 Removing nav tag from footer