Use Bootstrap-Flask accessibility features

[mfisher87]

For example, render_icon accepts title and desc parameters which it says are "for accessibility support". Does one of these become alt-text? What's the best practice for icons that are on buttons with text already?

[Sherwin-14]

@mfisher87 The desc parameter becomes alt-text I suppose. In my humble opinion the practice that I saw in some places was to provide and alt-text parameter with these icons which describe the core functionality of the component (button in this case).