introduce new pins, new icons, etc.
Merge branch 'master' into facelift
add logo and update favicon
accept only valid URLs (fixes issue #47)
Footer state (opened/closed) is remembered
Merge pull request #57 from thedawnrider/keep_footer_closed

Remember footer state
add condition guards to last commit
Merge branch 'facelift'
fix 52.1989256 showing as 52.198925299999999