Provide alternative text for images - Sign-up

A legend is provided in the "Notes" section of the meeting details page and a series of images are presented that do not include <alt> attributes. As such, screen reader users will be unable to discern the purpose of these images.

<img src="/sakai-signup-tool/images/edit.png?sakai.tool.placement.id=82119d3e-4a6e-4b26-8cee-5b95a366fef6"><img src="/sakai-signup-tool/images/delete.png?sakai.tool.placement.id=82119d3e-4a6e-4b26-8cee-5b95a366fef6"><img src="/sakai-signup-tool/images/email_go.png?sakai.tool.placement.id=82119d3e-4a6e-4b26-8cee-5b95a366fef6"><img src="/sakai-signup-tool/images/comment.gif?sakai.tool.placement.id=82119d3e-4a6e-4b26-8cee-5b95a366fef6">

Developers must ensure that all images provided in the environment are assigned <alt> attributes in order for screen reader users to discern their purpose. A meaningful description of the image must be provided in the alt attribute placed inside the <img> element.http://qa03-sakai.marist.edu:8080/portal/site/e72d72d4-f582-4dce-8261-6b923060787c/tool/82119d3e-4a6e-4b26-8cee-5b95a366fef6/organizer/orgSignupMeeting#A84dfddfb4fa546594fb0a95ead23702-HTML