Fixing arbitrary HTML user input vulnerability in message body. Since the revert back from using the richtext widget a few weeks ago html went unchecked into the message body.
Trimming off any lingering CR (\r) line terminators before appending CRLF (\r\n). build_mime_message was leaving extra CRs around, causing some havoc for certain mail servers and clients when running with SMTP.
UI improvements, distinguish between project and tasks by using green forprojects, blue for tasks. Minor database upgrade to allow for some UIimprovements. Release new version 2.21b1