Add import menu item to all addressBooks

[dagroe]

Since I needed to import contacts to different address books, I added the import function to the "more" menu of each address book. With that users can import contacts to the selected address book instead of the default (via the regular import button)

A popup to selected the target address book after clicking the regular import button may be better, but this worked for me as a quick solution, since I am new to angular.

Relates to #654