Fix "Clear all" logs in a channel

Concatenating string makes translators life hard.
Furthermore, unhandle is not i18n-friendly: let's use the
getChannelDisplayName function for retrieving the channel name...
improving bs3 grid editing
merge
Fix layout dragger collision #422
run grunt debug
fixing user attribute value bug, miscellaneous bug fixes
Merge pull request #416 from mlocati/fix-reports-logs-cleartext

Fix "Clear all" logs in a channel
grunt
grunt css, error on publish shown in panel