Updated FLASH plugin for browsers (tested on: opera, firefox, chrome)

Multiple improvements and fixes for:
- autodetection of time and language updated to new code in order to work back
- presentation mode (desktop) should not be asked anymore
- hotkeys PDF auto launcher (popup) removed and it will appear now in the bar (new desktop configurations)
- small fixes for multiple files converter (audio & images) for the filemanager (thunar)
