Code Changes (20130104-B)

1 - Various code changes to improve data handling
2 - Added flexibility to timespan setting for data processing
3 - Moved timespan selection box to Pending List page
4 - Clicking Pending List tab no longer automatically generates
corresponding list
5 - Modified hook_form_alter to use switch-case-break construct instead
of if-else
6 - Added new menu handler for Pending List report
7 - Renamed session item from 'debug_pl_time_span' to
'pending_list_time_span'
8 - Added capability to generate time zone list and select one for EB
attendee create_date field
9 - New functions: _eventbrite_sboc_get_timezone_list,
_eventbrite_sboc_get_timezone_by_index, _eventbrite_sboc_get_php_safe_tz