Repaired css for ui.buttonset in a ribbon bar

The list plugin css forced a with of 60px for all ui.buttonset.
Now the code is more specific so only ui.buttonsets in the aloha toolbar have width=60px.
Merge pull request #1244 from rainerda/hotfix-0.25.x-rt58287

Repaired css for ui.buttonset in a ribbon bar
[maven-release-plugin] prepare release alohaeditor-0.25.13
Added generated changelog mapping
[maven-release-plugin] prepare for next development iteration
Merge branch 'hotfix-0.25.x' of github.com:alohaeditor/Aloha-Editor into hotfix

Conflicts:
	pom.xml