Activate module from UI with multi-process server

In such case only the process who preformed the activation has its pool reloaded. Indeed the pool should be considered as a cache so there should be a cache invalidation mechanism.

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This affect the demo when testing user activates a module.

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I think it should be raised as bug as user action can break the system.

assigned to @ced

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review302861002 updated at https://codereview.tryton.org/302861002/#ps337301003

review302861002 updated at https://codereview.tryton.org/302861002/#ps349261002

New changeset 32cd371b3e9c by Cédric Krier in branch 'default':
Refresh pool of other processes
https://hg.tryton.org/trytond/rev/32cd371b3e9c

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closed

New changeset 490dd2b632b9 by Cédric Krier in branch 'default':
Refresh pool of other processes
https://hg.tryton.org/tryton-env/rev/490dd2b632b9

mentioned in issue #9532 (closed)