[FEATURE] create Search Panel Date Input

[acharliekelly]

For entering dates on the Search Panel

Requirements

• Toggle switch to indicate a single date vs a date range
  • If Range is selected, an End Date must also be selected from an identical calendar control
  • End Date must be later than Start Date (otherwise it gets confusing)
• Date only (no Time field for MVP)
• Radio button options for Entire Month, Entire Year, or Date(s) Unknown
  • All 3 options will be unchecked if a date is selected
• Once a date is selected and the control is closed, a string representation of the selected date should appear in the Date field
• User should be able to enter a date string in the field instead of using the control, but form validation will prevent them from submitting invalid info. Maybe a ? box to show acceptable format, or else just offer the calendar control to anyone who can't format date strings