removed extraneous "this one" words in comment notices
Tweak sign-in name

Signed-off-by: enyst <engel.nyst@gmail.com>
clarified comment in the code
fixed preview for new wiki discussion topics
fixed 'method POST not supported' error on deleting a tag
change unclaim button text from 'claim' to 'unclaim'
cleanup in SnowdriftEventHandler.hs