pull in changes from development

Changes were made to the HTML h tags - Issue 1451 (#2423) ...

* capture status

* Changes were made to the HTML h tags in order to make it more accessibility friendly and compliant

* Changes to make merge with development possible

* Fixe of the empty class

minor refactor of the template filter UI to make things align and feel related

issue#2375 allow change of delimiter for csv download (#2403) ...

* issue#2375 allow change of delimiter for csv download

* fix eslint issues, bugfix usage-dashboard when no stats exist, Styling tweaks to csv separator

* fix issues with tests by defaulting the separator to a comma NOTE: does not enforce tests on the separator param working

* fix issues with new separator argument in stat-created-plan and spec

Co-authored-by: Sam Rust <xsrust@gmail.com>

changed overflow setting for the guidance area (#2400)

Fix for the formatting issues with bullet points for exported docx plans ...

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.

Add an outline to table cell that is in focus. ...

Note we use the css :focus-within psuedo class that is not supported in either
IE or Edge
https://developer.mozilla.org/en-US/docs/Web/CSS/:focus-within

Fix #2170

Merge pull request #2211 from DMPRoadmap/issue2175 ...

Added functionality to give warnings when links open in new windows.

Merge pull request #2224 from DigitalCurationCentre/feature/remove_users ...

Allow Super admins to Archive and Merge users

Added functionality to give warnings when links open in new windows. ...

The solution is based on the recommendation in "Techniques for WCAG 2.0" section
"G201: Giving users advanced warning when opening a new window":
"Example 2: Using CSS to provide a warning before opening a new window"
(cf., https://www.w3.org/TR/WCAG20-TECHS/G201.html)

Changes:

- any link in the views with target="_blank" has had css class "has-new-window-popup-info" to the link together with the span   <span class="new-window-pop-info"><%= _('Opens in new window') %></span>.
- The javascript script externalLink.js is used for external links that don't have the target="_blank" in the view.

Fix for issue #2175.

Fix for making links have a higher color contrast to other text in blocks. (#2192) ...

The changes were based on the article  https://www.viget.com/articles/color-contrast/

Changes:
 - Link color has been  changed from #337ab7 to #107896.
According to https://webaim.org/resources/linkcontrastchecker/?fcolor=000000&bcolor=FFFFFF&lcolor=107896 (the "Link to Body Text" ratio is 4.14:1 and passes WCAG A test and "Link to Background" ratio is 5.06 and passes the 5.06:1 which satisfies WCAG AA test.)
- The TinyMce editor required new stylesheets to be created.

Fix for issue #1457

Table View Issue for Readonly Content of Plan and Template pages. ...

Changes:
- to re-style the readonly text tables with padding
- added the TinyMCE like styling to the Phase overview description

Fix for #2071.

The content of TinyMCE text area data viewed in readonly mode without thv TinyMCE editor had styling issues. ...

Added styling from TinyMCE to ensure that the readonly display had a similar overflow in y direction and table borders visible.

Fix for issue #2071.

Merge pull request #2082 from DMPRoadmap/issue1679 ...

Updated Usage page display to fix several issues.