First db:migrate fails with SQLServer (undefined method type for nil class in sqlserver adapter).

git-svn-id: http://svn.redmine.org/redmine/trunk@13645 e93f8b46-1217-0410-a6f0-8f06a7374b81
Removed some test contexts.

git-svn-id: http://svn.redmine.org/redmine/trunk@13646 e93f8b46-1217-0410-a6f0-8f06a7374b81
Removed some test contexts.

git-svn-id: http://svn.redmine.org/redmine/trunk@13647 e93f8b46-1217-0410-a6f0-8f06a7374b81
Fixed tests broken by r13646.

git-svn-id: http://svn.redmine.org/redmine/trunk@13648 e93f8b46-1217-0410-a6f0-8f06a7374b81