Merged from develop, made 'new notices' into a 'show new' button placed on the...

Merged from develop, made 'new notices' into a 'show new' button placed on the heading element, updated headings and buttons to be more consistent with new changes (log-in, notifications/read, conversation/collapse), changed bottom 'load older' block to not disappear on click to keep screen from scrolling and changed its styling more consistent with everything else.