[FIX] web_calendar: date/datetime fields format in calendar views

As everywhere else, dates & datetimes must be formatted according
to the format defined in the `res.lang` of the user, and within
the timezone of the user.

Before this revision, when adding a datetime field to a calendar view,
the raw value of the date was displayed, for instance:
`2015-01-01 10:00:00`
instead of
`01/01/2015 11:00:00`
for a user in English(US), in UTC +1.

fixes #5324
opw-653625

0 files changed, 0 insertions, 0 deletions