Merge pull request #10405 from daleharvey/882175

Bug 882175 - Fix cellbroadcast settings UI to not display opposite of actual value. r=kaze(cherry picked from commit 5ad48f6c2ac80027e88e8d0c469686946e34a9cd)

Conflicts:
	apps/settings/index.html
	apps/settings/js/call.js
	apps/settings/js/settings.js