wordpress customisations

Hello, I want to create this tasks: 1)- -Offer opportunity for members to edit their questions within 30min. (Showing a time descending, chrono) (Edit your question - You still have 29min 50sec ). -Offer opportunity for members to edit their answers within 5min. (Showing a time descending, chrono) (Edit your question - You still have 4min 50sec ). for this task you can use this plugin at: [login to view URL] Or you have the choice to choose any good chrono plugin. 2)- In the comments, there is a rating system and there are two images (Plus and Minus) and the voting number. What I want is, when a user click whether on plus or minus bouton a small loading picture must be added bofore the number update, and the number font have to be in "Bold". 3)- Add a simple form to let members to add their websites, in the "edit-profil" page. 4)- In the sidebar, for registred members, there is a page for "messagerie-privee" "private message", What I want is to show in the sidebar: the number of new messages, if there are somes. This is it, thanks.