[16.0][ADD] report_docx

[hbrunn]

This module allows to provide docx files as report templates to generate
docx reports.

Use Cases / Context

This module was developed because for some users it is easier to use
the docx format for their templates.

As it uses a slightly different templating language, it is not a
drop-in replacement for report_py3o.

It also does not provide any format conversions, though it should be
pretty simple to write a glue module that converts the resulting docx
files to formats supported by report_py3o.

Configuration

To configure this module, you need to:

1. Go to Settings / Technical / Actions / Report
2. Create a new report with type DOCX
3. Fill in the name of a model, ie crm.lead
4. Upload your DOCX file in the Template field
5. To help with crafting expressions in the template, switch to the DOCX
   tab, select a record and fill in some expression. When happy with the
   result, copy the code into your template document. Don't forget to
   read the extensive documentation on the right hand side

Known issues / Roadmap

• support images and embedded objects
• support concatenating docx files for multiple records
• support embedding html

[hbrunn]

CI fixed in #1147