(do not rely on <title> for this because it is not read by default by screen-readers).
validate calendar accessibility
Require alternate text for images
Remove instances where title text is relied on for screen readers (because screen readers don't handle it)
First some useful resource: http://www.webaim.org/techniques/alttext/
I am starting to evaluate alt attributes of all images by searching for /src=/ in main code base, expect many commits during the weekend...
all should be fixed, closing.
please reopen if any problems found