Refactor date and some quick fixes
Fixed Validation For Employees
Fixed validation for existing email address
Fixed Employee can't be deleted bug
edited the validation for asset name and asset type
edited collections to point tp heroku server
Changed validation for email only accepts global zeal format
Changed some mark for assets.ejs
ID1500 Modified the following files:

	both employee-details.ejs and employee-edit.ejs under templates
	both employee-details.js and employee.js under views

to work with EDIT user under View User
Corrected a div
Changed validation for email on edit user
Corrected date selection on employee-edit.ejs on templates
Made some code clean-up and some renamed class, views, and model related files
Some important UI Changes
changed assetsview and assetview validations for suppliername field.
Fix assets and employees view

- modify app/scripts/templates/asset-details.ejs
- modify app/scripts/templates/assets.ejs
- modify app/scripts/templates/employee-details.ejs
- modify app/styles/main.scss