The FastScroller is not working properly.

If you have a large number of contacts in the last section of contacts list,
when you scroll the list, the fast scroll bar will work improperly, it will scroll back.

The reason is that when we scroll to the last section, the next position of the next section is -1 but not the count of the contacts.

Change-Id: I058b3e6c88e8aaeabbfed291296e02dfd775018e
contacts-common: Add support for import contacts to local phone storage

This change allow to select the local storage account to add/import contacts
when others cloud/corporate accounts exists. If one or more account exists just
ask the user to select the destination account

Depends on: http://review.cyanogenmod.org/#/c/59352/

Change-Id: I0120861479a4dcced11a430803513fc21a2e130b
JIRA: CYAN-391
Issue: https://jira.cyanogenmod.org/browse/CYAN-391
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>