[ADD] ability to add note at the top of form when creating a task

[natacha-beck]

Close #1025.

To test if please add (or not) the following on a Boutiques descriptor (in custom section):

        "cbrain:input_notes": [
            "Note 1: this is the first note",
            "Note 2: this is the  note"
        ],

It works for bot Boutiques integrato old and new.

[MontrealSergiy]

works on my local install (new boutiques)

[MontrealSergiy]

I am not totally sure of code but works as expected on my local install

[MontrealSergiy]

not sure why errors is subdiv of notes div

[prioux]

This is wrong. Sergiy is right to be suspicious. If you have to put a </div> inside an if it certainly means the layout structure is badly done.

Also, this file here is a template for the general params page of all tasks, it cannot possibly have any sort of knownlede or dependencies on things like @task.descriptor_for_before_form which are compltely internal to the new BTQ integrator.

[prioux]

Re-think the whole thing, see my comments