when viewed in an old Word editor.

The fix follows the solution suggested in  the HtmlToWord bug "List item
bullets corrupted in Microsoft Word"
https://github.com/karnov/htmltoword/issues/73 suggested by David
Verhasselt @dv.

Changes:
   - Firstly, removed earlier attempted fix in commit
     5ef7e05 (Fix for format issues for
     bullet points in Plan docx exports).
   - Made a copy of Htmltoword (1.1.0) xslt stylesheets functions.xslt
     and numbering.xslt and made changes suggested by https://github.com/karnov/htmltoword/issues/73
   - Prepended the Htmltoword library XSLTHelper method xslt_path() in
     config/initializers/htmlto_word_xslt_helper.rb. This method ensures
     the Htmltoword library picks up the changed  numbering.xslt template instead of
     the library's version.
   - pinned version of htmltoword to 1.1.0

Fix for issue #2147.

The fix was suggested by @benjaminfaure: https://github.com/DMPRoadmap/roadmap/issues/2147#issuecomment-535935932

Changes:
Replaced <li> tag with <ol> in _plan.erb as suggested by @benjaminfaure
that <li> tag being transformed as € sign in the Word export.

Fix for issue #2147

The change 5538309 broke the docx export.
We no longer alter the question[:text].to_s before it it is sanitized in _Plan.erb. Adding surrounding the sanitized question[:text].to_s with <strong> tags
ensures the questions are highlighted bold.

Fix for #1893.

Fix for issue #1893

- Cleaned some of the formatting issues for the html, pdf and docx format
that used the partial app/views/shared/export/_plan.erb.

* Replaced instances of `raw` with `sanitize`

* Updated Brakeman ignores

* Remove unnecessary sanitation

* Add support for TinyMCE tags

This is a clean up of code based on PR comments.

Also updated the ExportablePlan helper method as_csv() to work with the selections made on the Plan Download page.

Issue #1730

Issue #1730

Also included is a fix for rendering if saving a new plan or editing a plan that results in
errors.

fixed issue with margins

removed old id

updated h1

updated h1s

fixed issue with pdf fomratting

fixed issue with pdf fomratting

switch to is_valid

fixed typo

updated security check