Add gitignore file

gitignore file
Revert "Add gitignore file"

This reverts commit e5c2dcc24d793ce4f6f37e64f8ab8789ebf9cfd3.
Revert "Revert "Add gitignore file""

This reverts commit 879316306d80d32f71ab819c8aab22487f501df6.
add changes
test changes
delete dbmdl file
Merge remote-tracking branch 'origin/master'

Conflicts:
	Training.CMS/Training.CMS.Sql/Training.CMS.Sql.sqlproj
	Training.CMS/Training.Service/UserService.cs
	Training.CMS/Training.Test/UserTest.cs
	Training.CMS/Training.Web/Training.Web.csproj