E802 project

Sign_up_sheet_controller refactoring and testing.
E802 project

Sign_up_sheet_controller refactoring and testing
E802 project

Sign_up_sheet_controller changes
Merge branch 'sign_up_sheet_controller' of git://github.com/mdjayaprakash/expertiza into E802

Conflicts:
	app/controllers/sign_up_sheet_controller.rb
	app/models/sign_up_topic.rb
	app/models/signupsheet.rb
	app/models/waitlist.rb
	tags
Set up .gitignore to ignore any files (e.g., from Emacs) that use #s
to indicate checkpoint.
Add back the database.example file.
Renamed a view that was referred to by an old name.