now that wbr tags are inputted, breaking usernames a bit more natually

replacing `word-wrap: break-word;` with `overflow: hidden;` - usernames with natural breakpoints and the new `<wbr>` tags will break naturally on to two lines - long single-word usernames with 12+ characters will truncate visually on one. Should be favorable to the ugly practice of dropping a single letter down to two-lines...

l