add image assets previously hosted on media.scpr.org
update layouts and partials to use local favicon, app icon and social icons
remove old Social Media flatpage; remove icon references from Podcast index view; update elections ballot partial to use local BG image
bring webtrends tracking script into SCPRv4
remove duplicate print.css reference in asset precompile list
removed redundant icons, updated img paths, used rails image helpers, switched webtrends asset precompile to string.
Fix hanging li tag
Use HTML trademark symbol
Remove unused favicon
Merge pull request #193 from SCPR/media-cleanup

Media cleanup