Added title attrs to facilitate reading long lines (bug 1079172).

Fixes [bug 1079172](https://bugzilla.mozilla.org/show_bug.cgi?id=1079172). I’ve added title attributes to anything with an `elliflow` class, and also some img elements.

On the `market_tile` macro there is a problem where the `.info` div displays above the icon, so the tooltip doesn’t display on mouseover. The `.icon` and `.info` classes sound very generic, so I didn’t want to change their styles to fix this problem because I fear causing further problems. Someone more familiar with the styles may want to point me in the right direction.