Revert "stop hiding the first line of email quotes /cc #3263"
Revert "stop hiding the first line of email quotes /cc #3263"

This reverts commit b1130b99002288f1501d224ebba0d20bb6acbaa0.

jch/html-pipeline,github/html-pipeline,gjtorikian/html-pipeline,moskvax/html-pipeline,github/html-pipeline,jch/html-pipeline,charliesome/html-pipeline,terracatta/html-pipeline,kbrock/html-pipeline,tricknotes/html-pipeline,kbrock/html-pipeline,terracatta/html-pipeline,moskvax/html-pipeline,gjtorikian/html-pipeline,nono/html-pipeline-linuxfr