Make QgsComposerManager non-modal, ensure consistency of composer manager composer list
Simplify test
Don't open multiple composer manager windows, don't hide the composer manager when showing/duplicating a composer
Use deleteLater in QgisApp::deleteComposerManager
Add mac window menu integration
Add activate slot
Merge pull request #1312 from manisandro/composer_manager_nonmodal

Make QgsComposerManager non-modal