Displays a bold, italic, add link and quote button on top of the comment form. .
Upload the "marctv_quicktags" folder into the plugins folder of your blog, Activate it. You're done!
Why did you do this?
Because needed a simple plugin to do this job and decided to do it on my own.
The plugin in action
removed img button
Loads css and quicktags.js only on pages with comments. Thank you, Ipstenu!
replaced custom styling with native wordpress styles.
Used new QuickTags API of WP 3.3