Use local timezone as server is always UTC

issue3444
review1421002
slugify report filename

This ensure that the file name will always work on any file-system.

issue3497
review1511002
Use get_eval for check_required computation

issue3473
review1561002
merge
Improve search for existing issue

roundup filter is not a strict equal operation so result must be filtered for
strict equality with the hash.

issue3472
review1521004