update widget images to https

http://widget => https://widget
	except references in compiled ember apps
http://cdn11.g5search => https://cdn11.g5search
	except references  in multifamily-mini-search & multi-family-search
http://themes => https://themes
	TODO: move this one themes reference to widget.g5dxm
use secure heroku url for floorplans widget
update placeholder to not include http
update placehold.it to https
update cdn11 to https on mf mini search
https for google plus and maps
Merge branch 'master' into secure_prep
https for floorplan-cards, ss cards show, mini s
https for floorplan-cards, ss cards show, mini s
Merge branch 'secure_prep' of github.com:G5/g5-widget-garden into secure_prep
update mf search cdn images to secure
more secure mf-search
fix s3 url to be cloudfront
remove ss-cards show
Merge pull request #371 from G5/secure_prep

Secure Sites Prep