Remove "vmail+" prefix from Mail aliases page

[DavidePrincipi]

As admin, when I create a new mail alias the shared mailboxes are named with "vmail+" prefix. Also in the table view the "vmail+" prefix is displayed.

That prefix is awkward and unclear, should be expanded as "shared mailbox" or similar.

See also

http://community.nethserver.org/t/ns7-shared-mailbox-update/3757/4

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Thanks to @filippocarletti

[DavidePrincipi]

Test case

After upgrading to the testing package the "Email addresses > Mail aliases" page no longer display shared mailboxes with "vmail+" prefix. On the contrary, a " (shared mailbox)" suffix is appended to UI labels. This must be true both on table view and when editing the single mail alias "destinations" field.

[DavidePrincipi]

In nethserver-testing: nethserver-mail-server-1.10.14-1.24.g033a3d3.ns7.noarch.rpm

[gsanchietti]

All shared mailbox are listed as " (shared mailbox)".

Verified

[gsanchietti]

Released: nethserver-mail-server-1.10.15-1.ns7.noarch.rpm