signal show notionally "flow" from left to bottom or from top to right. Some layout cleanups. git-svn-id: svn://localhost/ardour2/branches/3.0@4416 d708f5d6-7413-0410-9779-e7cbd77b26cf
Add Bundle Manager dialog. git-svn-id: svn://localhost/ardour2/branches/3.0@4415 d708f5d6-7413-0410-9779-e7cbd77b26cf