Fixed RegEx for logout in 14w18b, first_login and last_login, using whitelist

[PofMagicfingers]

Hi !

It's a big pull request, but here is my additions to your wonderful tool.

• Output now include First login and Last login dates
• REGEX_LOGOUT_USERNAME2 has been fixed (wasn't working with 14w18b)

Big new feature :

• -w whitelist.json argument : you can now use the whitelist to filter the output
  • Users included on the whitelist but not in the log will be included in the output, with zero values
  • Users not included in the whitelist but included in the log will be discarded before output rendering

Please note that I'm not used to python, I think that's the second time I use this language, feel free to correct me on anything.

Thanks, Pof.

[m0r13]

Hey,

Sorry, I forgot that pull request a bit. I will have a look at it.

[m0r13]

Your changes look fine, I only think that a JSON file is a bit of an overkill as whitelist file. I think a simple text file with one username per line would be enough. Also you didn't specify the format this JSON file should have.

I'll merge your changes and change the whitelist.json to a whitelist.txt. Also adding a blacklist could be a neat feature too I think.

[m0r13]

Oh wait I'm a derp, I didn't realize there is a new whitelist format. :)