RF(ENH): JailsReader.getOptions -- avoid code duplication when asking for 1 jail or all
TST: basic test for reading of a bogus jail
ENH+TST: Ticket -- drop unused/bogus get|setFile + enh __str__ + basic testing
Merge pull request #304 from yarikoptic/master

RF(ENH): JailsReader.getOptions -- avoid code duplication when asking for 1 jail or all

upon @kwirk blessing ;)
fail2ban-users: Sebastian Arcus - Detect device auth failures on Asterisk 11