a new toolbar icon (function) to insert an EMBED code from the web into
the current position of the cursor inside the htmlarea editor.
solves difficulties for non html users that wish to embed code inside
complex htmlarea text. and not just added it at the end of the code.
( a little bit more user friendly for novice web user)
i have patched the lib/editor/htmlarea/htmlarea.php file and lib/editor/htmlarea/dialog.js
and made two new ones : lib/editor/htmlarea/popups/insert_embed.php and lib/editor/htmlarea/popups/choose-a-video.php
and added some strings to editor.php file for the selected local language you use on your site.
all files are attached to this issue.
details follow in the comments area (it is more visually clear to have them there)