Notes:

• add/edit links here go to the standard page, which returns to the project, not the group
• in build definitions, targets replace goals for Ant, and it is omitted for shell
• in build definitions, build.xml replace pom file for Ant
• in build definitions, Executable replace pom file for Shell, and it is before the arguments
• later we might allow arbitrary groups, but for now they aren't editable
• pom.xml is relative to the project basedirs, not the group
• Do we want an aggregated group mode, where the build is only run on a reactor represented by the group?
• No Maven Group ID on non-Maven projects