Add hooks in attributes updated Before+After

[qhess34]

No description provided.

[infrastation]

https://wiki.racktables.org/index.php/SourceCode#use_exactly_one_tab_per_indentation_level

[qhess34]

FIXED ! (bad vim configuration)

[infrastation]

Thank you. So what would happen when the hook function runs fine and returns 0?

[qhess34]

Hello,
I've updated the PR, I've changed the condition with an isset to handle the issue that you told me.

[infrastation]

Thank you. I have cleaned and rebased this branch.

[infrastation]

Please see the change I have just added, this way if someone later needs to extend the code that updates attributes rather than their values, there will be no clash. Whilst looking there, I had realized that this would be the only case of having two hooks in a function (one before and one after), in which case it may be simpler just to call the whole function through callHook(). Let me think about it.

[qhess34]

Yes, you are right, those hooks work only on attribue value update so it's ok for me.

[qhess34]

Hello,
Could you tell me if this change will be merge as is in the next release ?