Added support for hidden apps (bug 1019249, 1019251)
for preload test plans, guess type from extensions rather than mimetype (bug 1031455)
fix iarc tests
get zippy adding and creating products working
Merge pull request #2287 from andymckay/zippy-zamboni-fixin

get zippy adding and creating products working
Sign package if missing in mini-manifest (bug 1035463)
Merge branch 'master' of github.com:mozilla/zamboni