R1:0c48c1f4870d

Make date control include times

Summary:
See discussion in T404. Basically, the problem with date-only controls is that they may behave unpredictably in the presence of timezones. When you say "This needs to be done by Oct 23", you probably mean "Oct 23 5PM PST" or something like that, but someone in China may see the "Oct 24" and hit the deadline in good faith but be 10 hours too late. T404 has more discussion and examples. There are ways to fake this, but they get more complicated if the guy in China…