Expand/collapse now sane on desktop
Collapsed layers now smaller in mobile mode
On mobile, layer manager z-index on top of everything, no transparency
Button spacing now fits on iPhone
Removed image download button on mobile
Mobile: scale line at bottom, only in km, zoom buttons removed
Merge branch 'master' of https://github.com/nasa-gibs/worldview

Conflicts:
	web/js/date/wv.date.timeline.js