[FEATURE] Trust: Hide edit on incoming (RT-2584)

When advanced options are off, all what a user sees when clicking the
edit link on an incoming trust, is a useless Remove button.
Hide the edit link entirely for incoming trusts when advanced = off.
[TASK] trust: disable edit on incoming, don't hide

For incoming trusts, the edit link should be visible, but disabled,
and show a hover tooltip.
Merge pull request #1805 from jublonet/2584-incoming-trust-no-edit-adv-off

[FEATURE] Trust: Hide edit on incoming (RT-2584)