Arrange tags in a table for dive edit dialog

This makes things look nicer and also reduces vertical size of the edit
dialog - which should now fit on a 600px display again.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Disable https connection for cross builds using mingw32

Not my preferred solution, but better than disabling divelogs.de uploads
for people using the Windows binary.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>