Feature: Add contacts multi-pick feature

Pick multiple recipients from Contacts/Mms/Calllog

Copy file from AOSP for Multi-pick contacts feature

CallLogGroupBuilder.java 0826aeb4af734d98eacedf8628f0ca339763dc1c
http://androidxref.com/6.0.1_r10/xref/packages/apps
/Dialer/src/com/android/dialer/calllog/CallLogGroupBuilder.java

ExpandableListFragment.java cda99b6967425f89b19794f5754010470b1dc637
https://github.com/wada811/Android-ExpandableListFragment/blob/master/library
/src/main/java/com/wada811/android/expandablelistfragment/ExpandableListFragment.java

CallTypeIconsView.java 4a0be7a13f953ce7cbf0e7b84b17a35a6bbf1617
http://androidxref.com/6.0.1_r10/xref/packages/apps/Dialer
/src/com/android/dialer/calllog/CallTypeIconsView.java

Change-Id: Ibe0173612d693c1bb7931cadd6805bd46df7e03f
CRs-Fixed: 988826