[Speedgrader] Move the emoji image out of the comments textbox

[jennlove]

Problem statement:

Instructors can add emojis to comments as they grade Assignments. However, the emoji image that they click on to add emojis gets in the way and can cover up the text that they are typing in the textbox. It's frustrating to have to enlarge the text box just to move the emoji image out of the way.

Proposed solution:

Move the button to click to add an emoji outside the textbox or otherwise move it out of the way of the text so that it will never cover up comment text as instructors are grading.

User role(s):

instructor