Assigning dates to orders when submitting their guest tabs

When the guest tab is submitted, all its unsubmitted orders are assigned the current date.

For example, say order 371 was created at 17:10 in guest tab 371. Then the guest tab draft was saved.

Figure 1.31. Order before guest tab is submitted

The guest tab was submitted at 17:15. This also changed the order date.

Figure 1.32. Order date changed after guest tab was submitted