Add session id in log context
Added parameter to pass an exception in logs
Clean Payline logs
Clean User logs
Clean POSS3 logs
Merge pull request #295 from trecouvr/log

Add session id in logs & rmv print_r
Add protection against redifinition of payline options
Merge pull request #296 from trecouvr/payline-smart-defines

Add protection against redifinition of payline options
Add payline unittest
merge