Add no-print css class so that elements can be discluded from printed reports

[aljones15]

Features:

• Adds the ability to hide error pop ups from printed reports.
• The should help to ensure the report conforms to w3c report guidelines

[davidlehn]

Do .no-print and .no-print * do something different in this case? I would have thought .no-print alone would cover descendants too.

[aljones15]

@davidlehn do not currently have cycles to deal with this. I believe the * is there to cover cases where descendants of an element get outside of the normal dom flow such as with a z-index or static position. The important also kind of worries me, but I believe I have seen things go to display: none with descendants go to display: block and the important would cover that case. This PR is not urgent.

Adding a To Do:

• @aljones15 needs to test what happens on hover with permutations of display prop in descendants with z-indexes outside the normal doc flow.