Added setting to customize name of project attachments tab, cutomized Sandy projects form
Added Project <-> Activity Type link table, added activity type to project, further customized SandyRelief projects.
Merge pull request #395 from copiesofcopies/customize_sandy_project_model

Added setting to customize name of project attachments tab, cutomized Sandy projects form
Cleanup
DRRPP: Make use of defined list_fields
Merge branch 'master' of git://github.com/flavour/eden