Simplified and integrated with Bugzilla

Removed TcCode and TcProject and replaced with bugzilla information

	modified:   personal_time_cards/settings.py
	modified:   requirements.txt
	modified:   timecards/admin.py
	new file:   timecards/migrations/0001_initial.py
	new file:   timecards/migrations/0002_auto__add_field_timecard_bug_summary.py
	new file:   timecards/migrations/0003_auto__add_field_timecard_add_to_bug_comments__add_field_timecard_bug_c.py
	new file:   timecards/migrations/__init__.py
	modified:   timecards/models.py