Fix jank in no favorites screen when showing/hiding dialpad DO NOT MERGE

Reintroduce a spacer view (under the no favorites view) that is
the same height as the search box + its margins, so that
the no favorites view does not shift when the dialpad is shown/hidden

Bug: 13341743
Change-Id: I00171b5fd546e30394c95d31976483d124f75f3b
(cherry picked from commit b0d197653fcdd2526ba9b85d613e4968ebbef2ab)
Dialer: Update landscape layout to match 4.4.3 codebase

Change-Id: Ib7768010ba88581030bdda902751ca7593f18b46
Hide shadow overlay for contact tiles with letter tile avatars

Also tweak layout of letter tiles to better match redlines

Bug: 13101785
Change-Id: I1846947a389bbdccc30bfe388b24e80e8724a357
(cherry picked from commit 7846f2e0ed4def3202029f6ef5d6e0b350de0986)