- start putting namespace Tisarana\Test in test and corrected errors of
  using namespace
- check the columns existance in table creation test not just table
  existance
- unit test for create comment table migration script
- create comment table migration script
- unit test for create event table migration script
- create event table migration script
- unit test for create user table migration script
- create user table migration script
- unit test for create group table migration script
- create group table migration script
- unit test for create group_memebr table migration script
- create group_member table migration script
- group table name field has cut and copy error of length 1500 and
  corrected back to 50
- unit test for create object table in migration script
- create object table in migration script
- unit test for create action table in migration script
- create action table in migration script
- unit test for create acl table in migration script
- create acl table in migration script
- remove "default(0)" in "creator" fields of all tables except comment
- remove "type" field from comment
- add "link_object" field in comment
- correct length of "name" field in event to 50
- add indexes to all tables
- add compound primary key (principal, principal_type, action columns)
  in acl table
- remove primary key id and add compund primary key (group, user
  columns) in group_member table