Missing translation string added (bnc#877547)
System/Software/Packages/Install: button styled
System/Software/Packages/List: button styled
System/Software/Packages/Upgrade: button styled
System/Software/Packages/Profiles: button styled
System/Software/Packages/Non Compliant: button styled
Delete system: button styled
BaseTreeEditOperation: avoid NPE in unexpected exception handling
Fix refreshing of Autoinstallable Tree forms (bnc#874144)