Merged in issue/EXT-15-ProductPluginAccessor (pull request #102)
Refapp takes whatever PluginAccessor is provided by plugins, see (changes to plugins)[https://bitbucket.org/atlassian/atlassian-plugins/pull-requests/196/ext-13-productpluginaccessor-is-caching/diff#chg-atlassian-plugins-main/src/main/java/com/atlassian/plugin/main/AtlassianPlugins.java]
As UPM will not be longer provided by platform poms I included dependency in refapp.
Refapp takes whatever PluginAccessor is provided by plugins, see (changes to plugins)[https://bitbucket.org/atlassian/atlassian-plugins/pull-requests/196/ext-13-productpluginaccessor-is-caching/diff#chg-atlassian-plugins-main/src/main/java/com/atlassian/plugin/main/AtlassianPlugins.java]
As UPM will not be longer provided by platform poms I included dependency in refapp.