#issue73 Added Primefaces Extensions with its dependencies.
#issue73 Renamed currentTaskSession component
#issue73 Added findByU_T_I finder.
#issue73 Added new methods and renamed some old.
#issue73 Regenerated
#issue73 Moving ProjectTreeNode
#issue73 Migrating properties to TimeSheetConstants
#issue73 Added Util classes
#issue73 Methods renaming
#issue73 Added new beans for Statistics component
issue#73 Create Statistics component