Merge pull request #733 from Gravecorp/3.1.x.x

o8build proxydef xsd validation implemented.
Merge pull request #734 from Gravecorp/3.1.x.x

o8g proxydef file path validator implemented.
Fixed issues with card casting in deck editor
Allows -i to overwrite a package in the loca dir if it exists, or blows up if it's in use.
Fixed authors list formatting.
Fixed issue with super wide buttons, might have other rammifications, as it affects all list boxes, so it's something to watch out for.
Merge branch '3.1.x.x' of github.com:kellyelton/OCTGN into 3.1.x.x
Possibly fixed the exclusion of .nupkg and o8g breaking.
Ok it ignores package files now.
Thank you .net for the cool oversight.