begining to switch departments to taxonomy terms

reversed previous change, for compatability with timeclock_telephone module only allowing numeric EIDs

corrected issue with timeclock_payroll.page.inc timeclock_payroll_main_page not rendering user links

Issue #2421499 by benjaminarthurt: modified eid field to allow numbers, letters and symbols for Employee IDs for greater compatability with outside payroll processors.

timeclock_payroll now correctly displaying shift lengths (fixed error where times over 24 hours were displayed incorrectly).

Added functions to create and work with Department Entity. Added requirement of Entity API to base timeclock module.

Created functions and forms for managing payperiods and sorting records based on the payperiod. Minor tweaks to names of pages in hook_menu

Issue #2372797 by benjaminarthurt: changed timeclock_process_punch to accept keyed array so any number of additional values can be passed back to hook_timeclock_punch_validate()

user/%uid/payroll now shows complete timesheet value including calculations. Not currently limiting to a specific time frame/payperiod.

modified timeclock_payroll_get_employee_shifts to use sub query to now properly output an array containing all punches for period, with the most recent edit_timestamp.