### What problem does this PR solve?
```
admin> grant admin 'aaa@aaa1.com';
Fail to grant aaa@aaa1.com admin authorization, code: 404, message: User 'aaa@aaa1.com' not found
admin> grant admin 'aaa@aaa.com';
Grant successfully!
admin> revoke admin 'aaa1@aaa.com';
Fail to revoke aaa1@aaa.com admin authorization, code: 404, message: User 'aaa1@aaa.com' not found
admin> revoke admin 'aaa@aaa.com';
Revoke successfully!
admin> revoke admin 'aaa@aaa.com';
aaa@aaa.com isn't superuser, yet!
admin> grant admin 'aaa@aaa.com';
Grant successfully!
admin> grant admin 'aaa@aaa.com';
aaa@aaa.com is already superuser!
admin> revoke admin 'aaa@aaa.com';
Revoke successfully!
```
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
Signed-off-by: Jin Hai <haijin.chn@gmail.com>
Co-authored-by: Kevin Hu <kevinhu.sh@gmail.com>
### What problem does this PR solve?
Currently, all components in configs are displayed even they are not
used. This PR is to fix it.
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
Signed-off-by: Jin Hai <haijin.chn@gmail.com>
### What problem does this PR solve?
As title
### Type of change
- [x] Refactoring
Signed-off-by: Jin Hai <haijin.chn@gmail.com>
Co-authored-by: Zhichang Yu <yuzhichang@gmail.com>
### What problem does this PR solve?
Update version, and remove '_canvas' suffix in agent_category.
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Clear agents display, remove empty value column.
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
