Purpose
-------

In several businesses, it might be cumbersome to properly calculate a
    quote (define an appropriate quantity, price, etc). The goal of this task is
    to allow user to easily access a spreadsheet (blank or preconfigured) to
    do those calculations.

Specification
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From a quotation template, you can create a spreadsheet calculator template.
    At creation, a list of sale order lines is inserted with a global
    filter allowing to filter the lines according to their quotation.

You can add "Field sync" rules on any cell (right click on a cell) to update
    one field of one order line in the list (readonly fields are excluded).

Then, when you create a quotation from the quotation template, you can open
    the spreadsheet calculator. It creates a copy of the spreadsheet (allowing
    you to play around values etc.) and adds a global filter to filter the
    sale order lines from the quotation.

From this spreadsheet, by clicking on "Save in SO00XX", it reads the values
    in cells with a "Field sync" rules and updates the quotation lines with
    those values.

This allows to create very specific flows with any arbitraty computations
    to compute any values in sale order lines, based on any data, from the
    spreadsheet itself or from the database by inserting other data sources
    in the spreadsheet template, for example, employee planning, products,
    stock, etc.

This great power and flexibility comes with limitation about how generic
    it can be. It's expected to hardcode product names or ids in formulas in
    order to match order lines. Hardcoded names are of course not robust to
    different languages, ids are robust to that but are less friendly and are
    not cross-db compatible. Each spreadsheet calculator template must be
    built specifically for every use case and every database.

Task: 3761590