Merge pull request #8186 from jaoo/836257

Bug 836257 - Be aware of GECKO_CARDSTATE_UNKNOWN new card state in Gaia ...(cherry picked from commit c76e97d635f9a6205a9a3933a79e90e27b25f4c9)

Conflicts:
	apps/communications/dialer/js/telephony_helper.js
	apps/settings/js/security_privacy.js
	apps/settings/js/simcard_lock.js