TASKMAN-17 : Adjust the single task view UI

TASKMAN-17 : Adjust the single task view UI and also 
TASKMAN-18 : Adjust the single task edit UI

Added the Creation Date field which is not editable
Adjusted the English translation for the new field
Don't forget to run a `mvn xar:format` before a pull request.  This part has been removed from the beginning of the file and added at the end (I think that **xar plugin** will manage that nicely).