1. fix incorrect tests, for example: BeanExists doesn't do assert and
shouldn't be used
2. remove unnecessary test functions
3. introduce DumpQueryResult to help to see the database rows during
test (at least I need it)
```
====== DumpQueryResult: SELECT * FROM action_runner_token ======
- # row[0]
id: 1
token: xeiWBL5kuTYxGPynHCqQdoeYmJAeG3IzGXCYTrDX
owner_id: 0
...
```
There are still some functions under `models` after last big refactor
about `models`. This change will move all team related functions to
service layer with no code change.
