Consesearch with date restriction

[JulienPeloton]

This query leads to wrong results:

"05:49:08.40" "+17:29:24.8" r=2d  after=2019-01-01 before=2019-01-30

as some alerts show with jd outside the range. However they have a jdstarthist within that window which confuses the search. We should restrict to jd values only.

CC: @hopkins9942

[JulienPeloton]

Same appears on the API:

In [7]: import io
   ...: import requests
   ...: import pandas as pd
   ...: 
   ...: # Get all objects falling within (center, radius) = ((ra, dec), radius)
   ...: # between 2021-06-25 05:59:37.000 (included) and 2021-07-01 05:59:37.000 (excluded)
   ...: r = requests.post(
   ...:   "https://fink-portal.org/api/v1/explorer",
   ...:   json={
   ...:     "ra": "05:49:08.40",
   ...:     "dec": "+17:29:24.8",
   ...:     "radius": "7200",
   ...:     "startdate": "2019-01-01",
   ...:     "window": 29 # in days
   ...:   }
   ...: )
   ...: 
   ...: # Format output in a DataFrame
   ...: pdf = pd.read_json(io.BytesIO(r.content))