Implements MultiSelection in Dict fields

Now that we have a MultiSelection field type we can also use it in the Dict field type.

This review adds it.

assigned to @nicoe

added sao tryton trytond ~844 + 1 deleted label

review284571003 updated at https://codereview.tryton.org/284571003/#ps282521002

added 1 deleted label and removed 1 deleted label

review284571003 updated at https://codereview.tryton.org/284571003/#ps268601002

review284571003 updated at https://codereview.tryton.org/284571003/#ps278271003

review284571003 updated at https://codereview.tryton.org/284571003/#ps256351002

review284571003 updated at https://codereview.tryton.org/284571003/#ps284591003

review284571003 updated at https://codereview.tryton.org/284571003/#ps276611011

New changeset 5018284cf30a by Nicolas ?vrard in branch 'default':
Add MultiSelection entry to Dict field
https://hg.tryton.org/sao/rev/5018284cf30a

added 1 deleted label and removed 1 deleted label

closed

New changeset 62ed8d1080c5 by Nicolas ?vrard in branch 'default':
Add MultiSelection entry to Dict field
https://hg.tryton.org/tryton/rev/62ed8d1080c5

New changeset ef2eba99f59b by Nicolas ?vrard in branch 'default':
Add MultiSelection entry to Dict field
https://hg.tryton.org/trytond/rev/ef2eba99f59b

New changeset 4756d27f7eda by Nicolas ?vrard in branch 'default':
Add MultiSelection entry to Dict field
https://hg.tryton.org/tryton-env/rev/4756d27f7eda