Fix problem with order in offences format.

Make sure the order of cops with the same count is alphabetical on all platforms. There was a difference in order on JRuby.
[#743] Implement auto-correct for SingleLineMethods cop
[#743] Implement auto-correct for Semicolon cop
[#743] Implement auto-correct for EmptyLineBetweenDefs cop
Merge pull request #803 from jonas054/autocorrect_single_line_methods

Autocorrect single line methods