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)
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_packages_apps_Dialer into kitkat

Conflicts:
	src/com/android/dialer/calllog/ContactInfoHelper.java

Change-Id: I0368c2784d08e46323d460e60dfdcbc85ebf4d9b