Editing alias does not retain the new information after they are saved.

[runboxdave]

Describe the bug
When editing the deliver to address of an alias although you can see it updating in the background when the changes are saved and the page refreshed the old details return.

To Reproduce
Steps to reproduce the behavior:

1. Go to https://runbox.com/app/account/aliases
2. Edit the deliver to address of an existing alias and save it.
3. It looks like the edit has taken effect, but refresh the page and...
4. The old details are returned.

Expected behavior
Aliases should be edited correctly.