Bug 8184 - Duplicate budget page lacks heading and breadcrumbs

Bug 8184 - Duplicate budget page lacks heading and breadcrumbs

Adding title, heading, and breadcrumbs for "duplicate a budget"
operation. Also:
  - adding cancel link for duplicate and edit
  - correcting the CSS so that the "edit" menu button
    is styled like an edit button.
operations.

Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Paul Poulain <paul.poulain@biblibre.com>
Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>