$configscope in config() helper method, validate not to be an array

### Situation - How did you get there?
Raised by a User from the Community

### Problem - What went wrong?
Infortis generates these CSS files by creating a Core/Template Block and writing output from toHTML() call to each CSS file. However, by generating the Block it triggers Magento's *core_block_abstract_prepare_layout_before* event.

MageMonkey has an Observer for this event that is designed to only add a Mass Action option on the Sales Grid.

### Possible solution - How should it be?
Add a validation to config() method
```php
	if( $configscope && ($configscope !== 'undefined') && !is_array($configscope) ){
		$store = $configscope;
	}
```