Added Slovenian localization

Added Slovenian localization for iRate control.
Added Greek localization

Added Greek localization
Updated to version 1.8.1
Fixed issue with preview mode when using explicit app ID
Merge pull request #128 from psy2k/master

Added Greek localization
Merge pull request #125 from Legoless/master

Added Slovenian localization
1.8.1 release
Fixed localization bug