Create thumbnails plugin

Add thumbnails plugin test
Add unsolved test with exists convert method
Merge branch 'master' into feature-thumbnails-plugin
Add empty files
Add interfaces.

* FileInterface
* FileRepositoryInterface
* FileStorageInterface
Add thumbnail plugin test
Add thumbnails plugin
Fix cols plugin for thumbnail plugin
Reduce methods of  FileInterface
Merge pull request #71 from toiee/add-file-interfaces

Add file interfaces
Fix cols plugin using Utility::parseColumnData
Fix plugin utility parseColumnData method

Resolve parameter "3+1"
Merge pull request #73 from toiee/fix-plugin-utility

Fix plugin utility parseColumnData method
Merge branch 'master' into fix-cols-plugin
Delete a empty line
Merge pull request #72 from toiee/fix-cols-plugin

Fix cols plugin
Resolve conflicts
Fix cols plugin

Fix thumbnail plugin changing cols plugin method
Fix thumbnails plugin test
Merge pull request #74 from toiee/feature-thumbnails-plugin

Create thumbnails plugin
Create haik_files table

Add migraitons for haik_files table
Migrate file of 2014_02_26_184257_create_haik_files_table.php