summary overview instead of exercise list.
toggle between list and table views.
Now table view is properly added in each scroll but not yet filled.
new comments now properly switch between expanded and table view
user and tag pages can has list view.
latest page also contains proper list and table scrollers.
remove logging.
fix oegy scroll on latest
Show toggles only when they have effect
fix oegy on user and tag related exercises
add comments to summary view and hilight new items
Merge branch 'summary_overview'