Fix issue in adding review comments: https://bugzilla.redhat.com/show_bug.cgi?id=1148214
rhbz1148248 - make chat content visible
rhbz1148259 - make history popup not autohide
Merge pull request #597 from zanata/rhbz1148259

rhbz1148259 - make history popup not autohide
Merge pull request #596 from zanata/rhbz1148248

rhbz1148248 - make chat content visible