Fix Giffgaff APN

Per https://jira.cyanogenmod.org/browse/CYAN-3035

Change-Id: I6b5109849ec021877d79356eeb5b579a1b5b5bc6
Add OVIVO APNs

Per https://jira.cyanogenmod.org/browse/CYAN-2987 and
http://ovivomobile.com/wp-content/uploads/2013/05/OVIVO-Mobile-Android-Phones-Setup-Guide.pdf

Change-Id: I596d7614ce13bc28ecc05370c18eda82ef061060
Fix Telenor DK MMS APN

Per https://jira.cyanogenmod.org/browse/CYAN-2513

Change-Id: I29063f5be9a54843e551ddda3c86ab0fa932e5ee