Merge changes from aaron with in-progress work on new comments/edits notification.
finished /new changes (per project tracking)
Merge github.com:strbean/snowdrift
change color on alpha notice
added link to on-site site-design page
Adjuste title for new edits, added title for new comments
changes to /new, comments still unfinished
one of many new images, more to come
intro separate images, all png and svg files compressed!
fixed issues with Merge github.com:strbean/snowdrift

Conflicts:
	Handler/Discussion.hs
	templates/wiki_new_edits.hamlet
updated size of 100.png and removed text from quadratic image
changed the /p/snowdrift/w/intro in the devDB to match my new full HTML coded illustrated intro
added co-op twin trees image