Update index assume unchange for database.example.yml and gem files

Fix conflict issue between Event model and BostonRbCalendar module event
class. Changed Event class to CalendarEvent class
Merge pull request #2 from justuseapen/event-conflict

Update index assume unchange for database.example.yml and gem files
erge branch 'master' of github.com:justuseapen/bostonrb into event-new-database
Add time_of_deletion column to location
Add edit and delete action for location and update controller