* Fixed a wrong prepareToobarButton call that caused the
`partner_query_addition` variable to remain undefined and thus also
caused the URLs comming from the popup to look like `queryundefined`.
Signed-off-by: mr.Shu <email@example.com>
* Previously the bang button would add the bang directly after the query
text, i.e. 'test!n'. The current implementation changes the behaviour
and adds a space between the query and the bang (so it would become