Group call history of same number.

[iBabu007]

Checklist

• [x] I made sure that there are no existing issues - open or closed - to which I could contribute my information.
• [x] I have read the FAQ and my problem isn't listed.
• [x] I have taken the time to fill in all the required details. I understand that the feature request will be dismissed otherwise.
• [x] This issue contains only one feature request.
• [x] I have read and understood the contribution guidelines.

Is your feature request related to a problem? Please describe.

Group call history of same number under a single list.I would be great if we could group them. And last activity shown inside recent panel. Like Google Phone, Koler

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[camlafit]

Looks related to #63 issue

[rafnov]

I really need that.