update language and instructions on SDWA violations page

[ericnost]

• [x] Instead of saying "select" an area we should say "draw" an area or stick with the default (Patterson)
• [x] We should indicate that the markers can be clicked on
• [x] We should include some encouraging language about persevering if things go unexpectedly (as in the demo)?
• [x] Move the "you drew a too-big box" error up so that it's visible, same with #24, and make it look more like an error warning.

[Frijol]

This is helpful. The only note I have is that the use of "select" vs "draw" makes it easier to refer to "the selected area" throughout (which we use heavily)

[ericnost]

ah, good point!