[FIX] hr_timesheet: fixed issue in code cleaning, xmlid_to_res_id returns an id, not the old model, res_id.
[ADD] added rating, rating_project and rating_project_issue module

[IMP] Added option to install rating module under Project

[IMP] added template to display when customer rates the task/issue

[IMP] Improved template and code

[IMP] : rating , rating_project and rating_project_issue as per new api

[IMP]: rating template

[FIX] : test case failed

[IMP] : code