Ruby style on methods please

Introduced in #4220. This ain't no JavaScript!
Land #4369, ruby style method names
Merge branch 'master' into landing-4359
Use get_cookies instead
Remove unnecessary RPORT, which comes from HttpClient
Mixin Scanner. Yay speed!
Minor style and usage updates as a result of Scanner
Add check support
Include info in report_vuln.  More style
report_vuln upon exploitation with more specific details
Correct last of the print_