allow for string based behavior events
fixes #1041

problem was caused by backbone`s `delegateEvents`. It expects if
the method is not a function that the named function is a property of
the view.
Merge commit '622bb2e71fb9b0c2123808ed97f00c63cdeff095' into develop
bump and build 1.7.1
Merge commit 'b71b7e0679e31889975eeb1e8d78357e8540bdbc' into develop