css: size of title and description fields
added change title feature
code cleanup and comments
replaced $(..).click(...) by $(document).on('click'), because its best practise
added body.letter-spacing
changed to $jQ(document).on(...)
added rudimentary login process
made comments sortable -> html-structure of list of comments is now ul.li
made all elements of one comment in the comments list "display: table-cell"