Add migration to make user.admin required

Revert r10296, which was a bad idea because it did not fix the problem if the
original version of the migration had already been applied.

git-svn-id: file:///home/svn/framework3/trunk@10333 4d416f70-5f16-0410-b530-b9f4589650da

data/sql/migrate/025_add_user_admin.rb

@@ -2,7 +2,7 @@ class AddUserAdmin < ActiveRecord::Migration
 
 	# Add user admin flag and project member list.
 	def self.up
-		add_column :users, :admin, :boolean, :null => false, :default => true
+		add_column :users, :admin, :boolean, :default => true
 
 		create_table :project_members, :id => false do |t|
 			t.integer :workspace_id, :null => false

data/sql/migrate/20100916151530_require_admin_flag.rb

@@ -0,0 +1,15 @@
+class RequireAdminFlag < ActiveRecord::Migration
+
+	# Make the admin flag required.
+	def self.up
+		# update any existing records
+		User.find_each { |u| u.admin = true if u.admin.nil? }
+
+		change_column :users, :admin, :boolean, :null => false, :default => true
+	end
+
+	def self.down
+		change_column :users, :admin, :boolean, :default => true
+	end
+
+end