Dialer: Fix Filter/Adjust meanings

http://www.wordreference.com/definition/adjust
1 - to change (something)
So it doesn't make sense to adjust parameters of something that still does
not exist. WWhen the time range is already set, we "adjust" it. But if it
isn't set, we "filter" that time range. Is a meaning thing thought, so I
guess is better to make it clear.

When filter is not set:
http://i.imgur.com/cekOBvr.png
When filter is set:
http://i.imgur.com/pOGKXbD.png

Change-Id: I6068c3542354aa3781e561aa798d56d5fc355027
Dialer: use letterbox contact images for callstats

PS2:
-ajust margin of callstats list with call log list

Change-Id: If9b44d4280bf58ad761cb6ed79530c6c8d34b999
Merge remote-tracking branch 'omnirom/android-4.4' into Kitkat