Issue 25140: Copy Quote to new customer/prospect

-- Needs to be considered along with the xtuple PR for the database changes

-- pull into 4.9
It's hard to visualize exactly what the layout looks like but embedding a `QHBoxLayout` inside a `QGridLayout` feels wrong. If the goal is for `_quoteDate` to be narrower than the `_cust` cluster, making `_cust` span 2 columns of the grid should do the trick.