Refactor file and run operations

* Added new interface RefactorFileOperation to identify a refactor operation for a file
* Use it from RunOperation for destination migration flow
* Changes on files.jsp and style sheet to show correctly the operations and logs for each file
* Minor fix on extraruninformationstatistics.jsp ('c' jstl library added)
Merge pull request #24 from alediator/migrate_flow_integration_destination

Refactor file and run operations