dive sites, edit undo, and the major steps towards 4.9

[Berthold Stoeger]

Hi Salva,

On Samstag, 13. April 2019 21:19:00 CEST Salvador Cuñat wrote:

> In a first try, the only thing I've noticed to fail is autocompletion
> in "Dive Master", "Buddy" and "Tags", while it works fine in "suit"
> and in "Divesite".

On Linux this should be fixed with commit b98ac90c43. On Mac Dirk still sees 
the problem if I understood correctly.

Thanks for testing.

Berthold