Translating strings

pt and es
(ActionItem2617)
Fixed bug when sending email to community members

(ActionItem2618)
Making shopping cart disabled on the enterprise by default
Fixing pre-population on add members
Merge commit 'refs/merge-requests/288' of git://gitorious.org/noosfero/noosfero into merge-requests/288
Merge commit 'refs/merge-requests/289' of git://gitorious.org/noosfero/noosfero into merge-requests/289
Apply admin/users_controller::index() optimization to stable

ActionItem2217
Merge commit 'refs/merge-requests/297' of git://gitorious.org/noosfero/noosfero into merge-requests/297
Adding missing require to csv
Strings used for forum type articles.
Merge branch 'ai2644' of git://github.com/caioformiga/noosfero-ecosol

Conflicts:
	po/es/noosfero.po
	po/pt/noosfero.po