update to rails 4.2.5, clean up

db/migrate/02_create_users.rb

@@ -20,7 +20,7 @@ class CreateUsers < ActiveRecord::Migration
 
       t.references :role, null: false, default: Role.get(:normal)
 
-      t.timestamps
+      t.timestamps null: true
     end
   end
 end

db/migrate/03_create_blogposts.rb

@@ -7,7 +7,7 @@ class CreateBlogposts < ActiveRecord::Migration
       t.references :user_author
       t.references :user_editor
 
-      t.timestamps
+      t.timestamps null: true
     end
   end
 end

db/migrate/04_create_comments.rb

@@ -7,7 +7,7 @@ class CreateComments < ActiveRecord::Migration
       t.references :user_editor
       t.references :blogpost
 
-      t.timestamps
+      t.timestamps null: true
     end
   end
 end

db/migrate/07_create_forumthreads.rb

@@ -11,7 +11,7 @@ class CreateForumthreads < ActiveRecord::Migration
 
       t.references :forum
 
-      t.timestamps
+      t.timestamps null: true
     end
   end
 end

db/migrate/08_create_sessions.rb

@@ -3,7 +3,7 @@ class CreateSessions < ActiveRecord::Migration
     create_table :sessions do |t|
       t.string :session_id, :null => false
       t.text :data
-      t.timestamps
+      t.timestamps null: true
     end
 
     add_index :sessions, :session_id

db/migrate/10_create_threadreplies.rb

@@ -7,7 +7,7 @@ class CreateThreadreplies < ActiveRecord::Migration
       t.references :user_editor
       t.references :forumthread
 
-      t.timestamps
+      t.timestamps null: true
     end
   end
 end