Phone number editing acts like location is editable when it's not

[ojacobson]

Steps to reproduce:

1. Go to the phone number edit page for a user.
2. Change an existing phone number's location.
3. Attempt to save.

Expected:

• Phone number is retained under a new location.

Actual:

• Changes not saved.

[ojacobson]

Internally, the coconut phone editing tools assume (RID, Location) is an unchanging key. PhoneDAO isn't prepared for phone numbers changing locations. Fixing this isn't hugely difficult; it's mainly annoying.

[nchanter]

This is true for E-mail and Mail as well