polling installation mode instead of setting from outside
packaging
Merge pull request #284 from yast/review_140813_fixing_testcases

[Review] Request from 'schubi2' @ 'yast/yast-yast2/review_140813_fixing_testcases'
Disable repositories with rejected GPG keys during installation

Fixes bnc#723019 and bnc#886572
Changelog and version updates
Merge pull request #285 from ancorgs/disable_untrusted_repos

Disable repositories with rejected GPG keys during installation