Use abrt python API instead of direct access

Requires abrt-python package.

Signed-off-by: Richard Marko <rmarko@fedoraproject.org>
Fix minor style and import issues

Signed-off-by: Richard Marko <rmarko@fedoraproject.org>
Merge branch 'release/0.5.4' into develop
Handle GError's when attempting to close open notifications (#1053160)
Merge pull request #18 from sorki/develop

Use ABRT python API to query bugzilla numbers
Rename our distro modules to avoid conflicts with things like python-fedora
Fix our distro specific imports
Make the topic grid scrollable (#1087076)

https://bugzilla.redhat.com/show_bug.cgi?id=1087076
Version bump
Merge branch 'release/0.5.5'