Allow to modify maturity date and tax lines

The tax lines modification are check by r ba63091f8632
And the maturity date is a business field that has no impact on the accounting so it is more flexible to allow to edit it.

assigned to @ced

added accounting type::behavior + 1 deleted label

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review42011002 updated at https://codereview.tryton.org/42011002/#ps1

New changeset 77d58c03c3ca by Cédric Krier in branch 'default':
Allow to edit maturity date and tax lines
http://hg.tryton.org/modules/account/rev/77d58c03c3ca

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closed

mentioned in issue #8787 (closed)