Fix plugin unit


- [x] Add Utility::createColuminClass for makes column class from column data

- [x] Add Utility::wrapColumn for makes html with column data

The first param is array or string.

ie.) array
```
array(
'cols' => 6,
'offset' => 1,
'class' => '.custom'
);
```

ie.) string
```
3
6+3
5.cutomeclass
8+2.cutomeclass
```