Edited based on the irc conversation that prompted this issue being opened.

Ok for the drop down list, but as builddefinition doesn't have a name field which fleld(s) must be displayed in the list ?
the id is not very friendly and some fields (like arguments) can be huge

I thought to goals but won't be a good solution if a project have more than one build def with same goals but different arguments.
We'd can add a description field (require a new db change), if it is empty, we print goals in the drop down list. wdyt?

Aggree on this db change and will help to solve CONTINUUM-1038.

svn rev 574073.

UI need enhancement (see http://www.nabble.com/UI-for-Group-Actions-tf4411680s177.html)

r574251 : change the label.
r574355 : remove the default build definition from the list box as it's the default one.