- For some reason, TinyMCE would handle empty paragraphs with a ' '
by default but this would be removed when the paragraph had an
attribute. This was fine in the old editor.
- This changes the approach to use '<br>' tags within elements
for "spaced emptiness".
- For compatbility with any existing empty paragraphs, I updated the
styles to show default height for empty paragraph sections.
- This also makes changes to help preserve encoded html tags
since they were getting converted along the journey.
Related to #3302
5947f59a04