Bug 922238 - Call log does not record missed calls when in the lockscreen

We were closing the call screen before executing the Voicemail.check callback

- Store the voicemail info in recentsEntry earlier than at closing
- Remove the opacity animation when showing/hiding the call screen (it was not really working)
- Remove the animating flag since it was preventing closing animations to not run if the opening animation did not run
Merge pull request #12921 from Rik/lockscreen-no-calllog-922238

Bug 922238 - Call log does not record missed calls when in the lockscreen r=etienne