Let us extend Ohara

Signed-off-by: Suki <suki@missallsunday.com>
Basic implementation of ActivityBar::show()

Most likely, a different one will have to be made for showing the activity on the the profile page.

Signed-off-by: Suki <suki@missallsunday.com>
Add the "placement" option

Signed-off-by: Suki <suki@missallsunday.com>