[HR] Improve view,title,tooltip and code.
[hr] Improve code and tooltip space.
[Imp] improve code in hr-contract.
[Imp] improve code in hr-contract.
[MERGE] merge with latest trunk
[Imp] improve view for Payslips Batches and Payment Advices.
[Merge] merge with latest trunk.
[IMP] improve MO Reference String
[imp img] Improve description Images for MRP.
[IMP] improve contract usability
[IMP] improve contract usability
[MERGE] merge with latest trunk
[MERGE]merged with main addons
[MERGE] [IMP] contract: minor usability improvements (typos, form view)
[MERGE] [IMP] mrp: improved reference string + updated screenshots in description
[MERGE] [IMP] hr: various minor usability improvements.
HR: job_id field string + form view improvements
hr_contract: added onchange_employee_id + small form view imp
hr_payroll: form view imp + contribution reigster wizard form view imp
hr_timesheet: help tootips imp + small form view imp