Enhance pysa datetimes processing (#50)

[biligonzales]

Describe the changes

Adding some logics into pysa.py to try to process the datetime better.
Also, exception handling has been added to avoid crash of the script.

Related issue(s)

#50

How was it tested?

Before: scrapping failed at some point if pysa was defined in the yaml config file (see related issue).

Now:

• scrapping works
• dates look good (although as we don't know what is the true value, we can only admit it's relevant)
• the script does not crash any longer because of the try/catch instructions.

[captainGeech42]

Perfect, thank you!