Contacts: Searching function in group editting interface is not powerfull

The default threshold of AutoCompleteTextView is 2, so we
can not search anything with one letter. The logic we used
to search contacts in group editing interface is querying
all the contacts' display name that match the given search
query, it does not support searching contacts' other info.

Change the threshold to 1. Use contacts' filter uri instead
of rawcontacts' content uri to implement a much more powerfull
search function.

CRs-Fixed: 761634

Change-Id: I9858136175cdd35f036bdaa4dc3c40df90aa7deb
Merge "Contacts: Searching function in group editting interface is not powerfull"
Add null judge when import contacts from SIM card

- When SIM contacts has no number, and Import it to Phone,add
  null judge to avoid insert empty value to database

CRs-Fixed: 763087

Change-Id: Ia7ba71400545e4cb20320a4f106dd91bfdbf4156
Merge "Add null judge when import contacts from SIM card"
ContactsCommon: Add direct call from contact list feature (2/2)

  - Requires cmcc overlay flag to be set in Contacts.

Change-Id: I014240c6d70db904f6ae027cd168cebe2d5c2977
Disable CMCC feature by default.

Change-Id: I75e9b92ac4a97d1cf728e68d9f3eb1837e276bf8
Fix up group fragment padding.

Change-Id: I0030dbef9afb54b08511b5a499225add1ef995a3
Import feature - auto prompt for importing SIM contacts

Change-Id: Ic7e039d35c0198855e910ecd7fe6e945b4b45302
(cherry picked from commit 0e855487ae4a5424a2e30ddcac9ea27aa96f1a15)
Toggle on flag to show auto-import from SIM dialog

Change-Id: I6613cf7b71abd526ccc56632c20a92e636c51959