Update Wordpress Plugin

I have a wordpress ticket system at [login to view URL] A demo can be reached at [login to view URL] I will provide the selected coder with the source code upon acceptance. *****Requirements******* 1- Add FAQ section thorough the TS (Ticket System) admin, this FAQ will show in any post/page via shortcode. You can also add a ticket as FAQ to the FAQ pipe. 2- Add canned messages section, a messes can be inserted to any reply as a fast-input method 3- Add signature to each user, the signature will be inserted automatically to each user reply [ based on an settings option ] 4- *** calculate response time to each reply, then inform user with average response time to expect a reply from you. 5- add rating system to each reply [1-5] and show statistics to each user 6- Add chat box [based on a settings option], by the end of a chat session you can select to add this session to TS as a new ticket. The chat box will include department list to select form and product list [based on a setting option] 7- chat box should show online/offline based on if there any user login to the TS admin and its status is "available". I no response receive during specific period say [1 min, a setting option], the chat inquiry should be submitted as ticket automatically. 8- Any delete action should be immediately /confirmed based on a setting option *** the response time in its simple way will include holidays in its calculation mechanism, although the accurate method should exclude it. anyway, I will accept the simple/accurate method. ******Instructions******** 1- your code should be well commented 2- you should provide comprehensive documentation for the plugin features usage (markdown is recommended, but can be in html or even plain text) ******VIP******* 1- Only serious and professional Wordpress developers apply. Please if you are not one of those, just do not waste my time 2- Do not respond with careless message, any bid of this type, which reflects careless reading to the project specification will be reported to Freelancer as spam. 3- Please stick to the project budget, any bid above or down these limits will be omitted. and finally, your careful reading reflect your serious business Thanks in advance Mohamed