Bugs #5635 & #5743 - Fixing a problem of file upload on Web browsers that are not featured with the JavaScript File API :
- adding a new system in order to decode easily the request parameters and put them automatically into a PoJo
Also :
- fixing forum subject/message form submission with file that the upload is not finished.
Merge branch 'SilverYoCha-bugs-5635-5743' into components-5.14.x