sidebar search form

[bassjobsen]

JBST adds a default button to the form.
The "old" sematik hides this button by default.
I also found BuddyPress changed the structure of this form (bu overriding get_search_form();) and adds a btn-success class to the button.

Also check when and if searchbar.php will be used.

Keep accessibility in mind, see: http://stackoverflow.com/a/17360131/1596547, see also issue #35