Project Mode: View/Write/Edit comments

Description

Adds a comment form to the project item activity feed. This allows messages to be created as part of the activity feed in order to facilitate collaboration on project items. Additionally it is possible to reply to these messages or comment on other activities in the activity feed.

Message, comments, or replies can be edited by the original author.

Comments can be posted by pressing the 'Enter' key. Multi-lined comments can be written by creating new lines with the 'Shift + Enter' combination.