"Modular" Fairphone 2 relaunched with removable slim covers

Project Ara perhaps embodied the ideal of a truly modular smartphone, but now that it's dead, the interpretation of what "modular" means is fair game. For LG, it means removing the bottom edge to plug in accessories. For Motorola, it's simply magnetically attaching a back cover. For the makers of Fairphone, however, it simply means being able to easily replace …