Bug 34923: Allow direct input of hold dates on opac-reserve.tt

Bug 34923: Allow direct input of hold dates on opac-reserve.tt

To test:
1. Turn on AllowHoldDateInFuture and OPACAllowHoldDateInFuture
2. Make a hold in OPAC and notice you cannot directly input a date in either the "Hold starts on date:" field or the "Hold not needed after:" field.
3. APPLY PATCH
4. Clear your browser cache and try again. You should be able to directly input dates.

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>