Drupal 8.x

Hello!  I need recommendations please on possible solutions to prevent non-tech folks from pasting MS Word doc formatted tables into Drupal 8.  They do not know html, so they are pasting Word-formatted text into the WYSIWYG, which means I have to go back in after them and remove all of Word's in-line styles and other Word junk code, then add in accessibility code.  I'd like to avoid the mess and provide them with some sort of a template that can be used as a Word doc that is formatted exactly the way I need the content to be pasted into Drupal.  Is this possible?  Is there a better option? 

I am trying to port a Drupal 7 theme to version 8.7.10. I am currently encountering the following error:

User error: "name" is an invalid render array key. in Drupal\Core\Render\Element::children() (line 97 of /opt/drupal8.10/core/lib/Drupal/Core/Render/Element.php)

In the process of converting my theme, I have done the following:

- I copied over my drupal 7 theme to the 'themes/custom/' directory under my drupal 8 project root

In my theme, I have a template for my home page-front.html.twig

I insert a view on this page with the following code :

{{ drupal_view('message_activity_stream_timeline_private', 'block_1') }}

I want that if the view has no result, there is the following text :
 

MY CUSTOM TEXT

How to create this condition in the template ?

I've got a client who likes to make long pages with embedded images, but there's a problem with the editor on their site that has been causing them and me months of frustration. They can add one image to the body of their article without a problem, including a caption and an alignment. And if they add a second image it also works fine. Until they try to edit the page.

I've been looking for the answer to this all over the place, but I cannot find it via any search engine or forum, so my last resort is to ask the experts here.  I'm using Drupal 8. I have a content type (D) which contains a field (entity reference field) which outputs the teaser display of another content type (A), there are multiple items. How do I use Views to affect how the field displays the items?

Does anyone know the specific release dates for the following:

• The first RC for 8.8.0 core (RC-1, not alpha, beta, etc)

• The official non-RC for 8.8 core (stable release for prod use)

I know it's supposed to be officially released "in December" but I'm looking for more specificity so we can plan around the holidays.