TableScope

• Implemented Reactive Table for the Users dashboard (thanks @jshimko!).
• Upgraded Herald package (thanks @kestanous!).
• Upgraded Avatar package (thanks @bengott!).
• Upgraded Autoform package.
• Added Greek translation (thanks @portokallidis!).
• Improved Spanish translation (thanks @brayancruces!).
• Added new callbacks for upvoting and downvoting (thanks @Baxter900 !).
• OP comments now get the author-comment CSS class.