[IMP] Mail Improvements
[MERGE]: Merged with addons
[IMP]website_partner: Replace none with never in notification email send field.
[MRG]Merge with lp:openobject-addons
[MRG] merge with main branch
[FIX] sale : Don't allow line creation in confirmed sale oder.
[IMP] change field name notificatio_email_send to notify_email and none selection key instead of never
[REMOVE]removed module_project_long_term field from project/resconfig_view as well as from resconfig_py.
[MRG] merge with main branch
[MERGE]sync with trunk.
[MERGE]sync with trunk.
[Merge] Merged with trunk.
[MERGE] [IMP] Hide the group 'Manage resources planning on gantt view' from project settings
[MERGE][FIX] sale: disallow line creation on confirmed sales orders

[patch by Divyesh Makwana (OpenERP)]
[MERGE] [IMP] mail: Inbox usability improvements :
- notficiation_email_send field, renamed into notify_email, has now 2 values: always or never, in
order to ease the choice and simplify options.
- inbox: removed 'compose a new messages or write to my followers', because those 2 options are
already available. The first one is accessible using the top-right email icon, the second one
is accessible with the 'write to my followers' text box alread present in the inbox.