I have added some visual changes to emulate the style of

the Comment UI in the design document version of the Review

Composer. These are mostly CSS based. I used a similar solution

for the Ship it checkbox on the "Open an Issue" checkbox.

I also moved the "Edit" icon to the right of the screen through

CSS to emulate the look of the design document.
Added some code for the dropdown menu. Not finished.

I ran the JS unit tests and there weren't any errors.
The inclusion of the new code for the dropdown menu in textEditorView.es6.js caused some tests to fail.