Add more contacts choice to contact list

The dialer only included recent callers, but there was no way to access
the full contact list (contacts.tsv). I added a "more contacts" options
that calls sxmo_contacts --all, providing an alphabetically sorted list
of all your contacts. It also works for the texting menu.

This is a cleaned up version of an earlier patch by Maarten van Gompel.

Signed-off-by: Maarten van Gompel <proycon@anaproy.nl>

scripts/core/sxmo_contacts.sh

@@ -28,4 +28,14 @@ contacts() {
 	' "$CONTACTSFILE" -
 }
 
-contacts
+all_contacts() {
+	cat "$CONTACTSFILE" | awk -F'\t' '{
+		if (substr($0,1,1) == "+") print $1 ": " $2
+	}' | sort -f -k 2
+}
+
+if [ "$1" = "--all" ]; then
+	all_contacts
+else
+	contacts
+fi