moveing migration numbers!!!!!

renamed: 001800_create_application_machines.rb -> 000650_create_application_machines.rb
renamed: 001801_create_database_machines.rb -> 000680_create_database_machines.rb
renamed: 000600_create_user_application_table_columns.rb -> 000900_create_user_application_table_columns.rb
InstanceDatabase model
moveing migration numbers
ApplicationMachineUser add
development machine seed (ApplicationMachine, DatabaseMachine)
remove application_databases, and to user_database