story auto close initial support.
update story auto close.
Merge branch 'master' of /opt/alminium/vendor/plugins/redmine_backlogs into story-autoclose
config to disable story auto close and the function is disabled in default now.
Initial requirements for Release-feature
Make backlogs issue history-function usable for release history.

Possibly candidate of refactoring to move sprint specific logic away from history().
Initial rework of release graph
Update new release graph to use unified journal
Updated CSV export for new release graph data
Merge branch 'master' into bohansen_release_chart

Conflicts:
	app/models/rb_release.rb
	app/views/rb_release_burndown_charts/_burndown.html.erb
	config/locales/fr.yml
Merge branch 'master' into bohansen_release_chart
Merge branch 'master' into bohansen_release_chart
Merge remote branch 'backlogs/master' into bohansen_release_chart
Corrected sprint selection for release
Fixes #745
fixes #740
Incompatibility between RM2.0 and RM2.1

This is really getting to be a major PITA. And 2.2 again incompatible.
v0.9.27
Seems to break the build
travis