WebComment: comment moderation and improvements

• Comments marked as deleted in DB instead of complete deletion

• Links to moderate a comment while viewing the record if logged in as moderator

• Admin interface. Connected user only sees information about the collections he/she is moderator in

• Definitive admin approval. Do not show report abuse link once the comment has been accepted

• Washing of comments coming from plaintext editor

• Washing and formatting of emails sent to moderators

• LaTeX/JSMath in comments

• UI changes in comments page

• Option for author own deletion of comments

• Web test for deleting and reporting comments

• WebComment Admin Guide updated