3140: Move tab line buttons, remove show filtering widget
3140: add additional content tabs to pane list
3140: add Other_objects to pane list
Merge branch 'master' into 3140-project-content-tabs
oops
3140: add partials for all the content tabs
Merge branch 'master' into 3140-project-content-tabs
Merge branch 'master' into 3140-project-content-tabs
Merge branch 'master' into 3140-project-content-tabs
closes #3140
Merge branch '3140-project-content-tabs'