Added Some css, lmages, Controller, ViewModels, App_Code

1. Login, Site.css updated and added. These login and Site.css additions are not used as of now.

2. Added Dashboard Controller with Index, MyBills actions along with correspoding views.

3. BillViewModel added and App_code to fill this Model is added.

4. FillBillViewModel contains only method MyBills to get Bill filled by a Employee.

5. ApplicationName = Alchemy Apricot
6. Copyright = Alchemy Inc.