Change Log 2013-12-22-B

Code clean up/refactoring
1: Explicitly initialize  standard object variable as per PHP
requirements
2: Refactored function _insert_blocked_date to use multi-insert
statement
3: Code cleanup in .module file
4: Commented out call to_update_blocked_date inside hook_node_update
callback function. Updating node blocker records in
zen_vupoint_blocked_dates table is not longer useful. Requires
delete/add sequence.