Removes duplicate error messages from being displayed during batch action error.
Removes duplicate error messages from being displayed during batch action error.

Fixes bug 953583.

Change-Id: Ie7a5e0bef12372debb3fa1b3837488b5609b58c8

bigswitch/horizon,mrunge/horizon_lib,dan1/horizon-proto,damien-dg/horizon,opencloudconsortium/tukey-portal,philoniare/horizon,orbitfp7/horizon,spring-week-topos/horizon-week,pranavtendolkr/horizon,karthik-suresh/horizon,vladryk/horizon,NCI-Cloud/horizon,mandeepdhami/horizon,takeshineshiro/horizon,vladryk/horizon,endorphinl/horizon,openstack-ja/horizon,endorphinl/horizon,maestro-hybrid-cloud/horizon,FNST-OpenStack/horizon,dan1/horizon-x509,tqtran7/horizon,redhat-openstack/horizon,xinwu/horizon,rickerc/horizon_audit,VaneCloud/horizon,FNST-OpenStack/horizon,liyitest/rr,kaiweifan/horizon,wolverineav/horizon,tqtran7/horizon,damien-dg/horizon,rdo-management/tuskar-ui,idjaw/horizon,damien-dg/horizon,CiscoSystems/horizon,froyobin/horizon,luhanhan/horizon,flochaz/horizon,r-icarus/openstack_microserver,CiscoSystems/horizon,coreycb/horizon,redhat-cip/horizon,tsufiev/horizon,nvoron23/avos,CiscoSystems/horizon,99cloud/keystone_register,NeCTAR-RC/horizon,ging/horizon,Dark-Hacker/horizon,bac/horizon,j4/horizon,CiscoSystems/avos,openstack/horizon,coreycb/horizon,davidcusatis/horizon,tsufiev/horizon,karthik-suresh/horizon,asomya/test,mrunge/openstack_horizon,savi-dev/horizon,takeshineshiro/horizon,anthonydillon/horizon,vbannai/disk-qos-horizon,henaras/horizon,mrunge/openstack_horizon,BiznetGIO/horizon,tanglei528/horizon,bigswitch/horizon,takeshineshiro/horizon,yeming233/horizon,dan1/horizon-x509,netscaler/horizon,kaiweifan/horizon,citrix-openstack-build/horizon,occ-data/tukey-portal,BiznetGIO/horizon,noironetworks/horizon,RudoCris/horizon,promptworks/horizon,asomya/test,xme1226/horizon,orbitfp7/horizon,vbannai/disk-qos-horizon,newrocknj/horizon,gochist/horizon,eayunstack/horizon,agileblaze/OpenStackTwoFactorAuthentication,Hodorable/0602,saydulk/horizon,bigswitch/horizon,Tesora/tesora-horizon,xinwu/horizon,blueboxgroup/horizon,Solinea/horizon,endorphinl/horizon-fork,agileblaze/OpenStackTwoFactorAuthentication,1ukash/horizon,dan1/horizon-proto,sandvine/horizon,eayunstack/horizon,VaneCloud/horizon,idjaw/horizon,xme1226/horizon,endorphinl/horizon-fork,j4/horizon,doug-fish/horizon,dan1/horizon-proto,Frostman/eho-horizon,icloudrnd/automation_tools,django-leonardo/horizon,occ-data/tukey-portal,pranavtendolkr/horizon,mdavid/horizon,karthik-suresh/horizon,99cloud/keystone_register,endorphinl/horizon-fork,promptworks/horizon,tuskar/tuskar-ui,BiznetGIO/horizon,zouyapeng/horizon,saydulk/horizon,kfox1111/horizon,wangxiangyu/horizon,promptworks/horizon,openstack/horizon,tsufiev/horizon,nvoron23/avos,davidcusatis/horizon,nvoron23/avos,liyitest/rr,flochaz/horizon,idjaw/horizon,luhanhan/horizon,NCI-Cloud/horizon,endorphinl/horizon,sandvine/horizon,VaneCloud/horizon,coreycb/horizon,CiscoSystems/horizon,JioCloud/horizon,j4/horizon,bigswitch/horizon,coreycb/horizon,pranavtendolkr/horizon,wangxiangyu/horizon,aaronorosen/horizon-congress,henaras/horizon,endorphinl/horizon,mandeepdhami/horizon,watonyweng/horizon,django-leonardo/horizon,agileblaze/OpenStackTwoFactorAuthentication,99cloud/keystone_register,bac/horizon,django-leonardo/horizon,tsufiev/horizon,henaras/horizon,wangxiangyu/horizon,gerrive/horizon,wolverineav/horizon,opencloudconsortium/tukey-portal,VaneCloud/horizon,karthik-suresh/horizon,mandeepdhami/horizon,Metaswitch/horizon,openstack-ja/horizon,blueboxgroup/horizon,froyobin/horizon,icloudrnd/automation_tools,1ukash/horizon,mrunge/openstack_horizon,rdo-management/tuskar-ui,Frostman/eho-horizon,mdavid/horizon,mdavid/horizon,liyitest/rr,ikargis/horizon_fod,sandvine/horizon,redhat-cip/horizon,Dark-Hacker/horizon,pranavtendolkr/horizon,maestro-hybrid-cloud/horizon,r-icarus/openstack_microserver,liyitest/rr,agileblaze/OpenStackTwoFactorAuthentication,mandeepdhami/horizon,spring-week-topos/horizon-week,tqtran7/horizon,NeCTAR-RC/horizon,LabAdvComp/tukey_portal,yeming233/horizon,wolverineav/horizon,kfox1111/horizon,yjxtogo/horizon,ging/horizon,wangxiangyu/horizon,doug-fish/horizon,kfox1111/horizon,mrunge/horizon,kfox1111/horizon,ChameleonCloud/horizon,openstack/horizon,gerrive/horizon,yjxtogo/horizon,Solinea/horizon,kaiweifan/horizon,yjxtogo/horizon,ikargis/horizon_fod,wolverineav/horizon,flochaz/horizon,nvoron23/avos,tellesnobrega/horizon,davidcusatis/horizon,FNST-OpenStack/horizon,yeming233/horizon,Solinea/horizon,damien-dg/horizon,rickerc/horizon_audit,occ-data/tukey-portal,yjxtogo/horizon,eayunstack/horizon,1ukash/horizon,anthonydillon/horizon,CiscoSystems/avos,NeCTAR-RC/horizon,mrunge/horizon_lib,xme1226/horizon,idjaw/horizon,watonyweng/horizon,luhanhan/horizon,mrunge/horizon,orbitfp7/horizon,netscaler/horizon,netscaler/horizon,openstack/horizon,tellesnobrega/horizon,froyobin/horizon,noironetworks/horizon,luhanhan/horizon,Hodorable/0602,NeCTAR-RC/horizon,doug-fish/horizon,aaronorosen/horizon-congress,redhat-openstack/horizon,NCI-Cloud/horizon,zouyapeng/horizon,tqtran7/horizon,flochaz/horizon,sandvine/horizon,RudoCris/horizon,mrunge/horizon_lib,CiscoSystems/avos,Dark-Hacker/horizon,JioCloud/horizon,dan1/horizon-proto,endorphinl/horizon-fork,blueboxgroup/horizon,gerrive/horizon,redhat-cip/horizon,Mirantis/mos-horizon,ChameleonCloud/horizon,Metaswitch/horizon,Tesora/tesora-horizon,redhat-cip/horizon,watonyweng/horizon,gochist/horizon,rdo-management/tuskar-ui,Mirantis/mos-horizon,RudoCris/horizon,savi-dev/horizon,ChameleonCloud/horizon,xinwu/horizon,zouyapeng/horizon,takeshineshiro/horizon,xinwu/horizon,yanheven/console,bac/horizon,izadorozhna/dashboard_integration_tests,NCI-Cloud/horizon,vbannai/disk-qos-horizon,openstack-ja/horizon,promptworks/horizon,ging/horizon,j4/horizon,watonyweng/horizon,icloudrnd/automation_tools,Tesora/tesora-horizon,django-leonardo/horizon,mrunge/horizon,tellesnobrega/horizon,yanheven/console,yeming233/horizon,philoniare/horizon,BiznetGIO/horizon,Hodorable/0602,rdo-management/tuskar-ui,aaronorosen/horizon-congress,orbitfp7/horizon,anthonydillon/horizon,saydulk/horizon,RudoCris/horizon,yanheven/console,savi-dev/horizon,maestro-hybrid-cloud/horizon,tanglei528/horizon,maestro-hybrid-cloud/horizon,tuskar/tuskar-ui,vladryk/horizon,tanglei528/horizon,noironetworks/horizon,Frostman/eho-horizon,Tesora/tesora-horizon,newrocknj/horizon,newrocknj/horizon,newrocknj/horizon,Metaswitch/horizon,davidcusatis/horizon,bac/horizon,citrix-openstack-build/horizon,asomya/test,dan1/horizon-x509,henaras/horizon,Mirantis/mos-horizon,saydulk/horizon,Daniex/horizon,vladryk/horizon,JioCloud/horizon,redhat-openstack/horizon,izadorozhna/dashboard_integration_tests,Hodorable/0602,Daniex/horizon,dan1/horizon-x509,LabAdvComp/tukey_portal,gochist/horizon,CiscoSystems/avos,blueboxgroup/horizon,zouyapeng/horizon,ChameleonCloud/horizon,FNST-OpenStack/horizon,Metaswitch/horizon,tellesnobrega/horizon,Daniex/horizon,doug-fish/horizon,gerrive/horizon,Daniex/horizon,LabAdvComp/tukey_portal,redhat-openstack/horizon,LabAdvComp/tukey_portal,rickerc/horizon_audit,noironetworks/horizon,mdavid/horizon,Mirantis/mos-horizon,citrix-openstack-build/horizon,ging/horizon,spring-week-topos/horizon-week,opencloudconsortium/tukey-portal,philoniare/horizon,philoniare/horizon,Solinea/horizon,ikargis/horizon_fod,r-icarus/openstack_microserver,tuskar/tuskar-ui,Dark-Hacker/horizon,anthonydillon/horizon,icloudrnd/automation_tools