[facets] closes #1569459 (date-range facet with year < 1900)
use lgc.date.ustrftime() and lgc.date.ticks2datetime to convert js date ticks and
have a chance to handle dates with year < 1900.
# copyright %(year)s %(author)s, all rights reserved.
# contact %(author-web-site)s -- mailto:%(author-email)s
#
%(long-license)s
"""%(distname)s precreate script, executed at instance creation time or when
the cube is added to an existing instance, before the schema is serialized.
This is typically to create groups referenced by the cube'schema.
"""