Fix dynaGrid's namespace

In view files the correct namespace is : ```use kartik\dynagrid\DynaGrid;``` instead of ```use kartik\widget\DynaGrid;```
Merge pull request #9 from monghuz/patch-1

Fix dynaGrid's namespace
Add hungarian translation
Merge pull request #10 from monghuz/patch-2

Add hungarian translation
Added german translation
Merge pull request #11 from thelfensdrfer/patch-1

Added german translation
Unique dynagrid id made mandatory
Merge commit '80e6fededc1ea21aa38ef23b14306442dca6582f'

* commit '80e6fededc1ea21aa38ef23b14306442dca6582f':
  Unique dynagrid id made mandatory
  Added german translation
  Add hungarian translation
  Fix dynaGrid's namespace