Recent contacts view on home screen

Hi guys, I've added some logic to create the recent contacts view. It took me a while and a lot of searching to create this functionality. With this branch, recent contacts are parsed in home.js, and listed out in descending order by the number of occurrence (the more common a name appears on screen, the higher it is on the list).
The number of contacts is limited to 5 and the user's own name is omitted from the list.

 However, there is still a part where I still don't understand (I know, I coded this up O_o). Particularly between line 124 to 134 of home.js. 
Hopefully y'all can shed some light on this and review the PR in the meantime!

Cheers! :smiley: 
Hm that's a good question Tony. I guess the question comes down to whether or not objects are treated the same way as arrays. I know that for arrays the value would be updated for the same key. I think that it would work the same way for objects as well and, in particular, the `arrResultObj` here. What do you think @psybuzz?