* Modified UI to be more consistent with other OS X prefpanes. (Modelled...

... on Time Machine and Network Link Conditioner)

 * Added a whole bunch of additional network speeds to the list:
     * Ethernet (10, 100 and 1000)
     * 802.11b, g and n
     * WiMax, HSPA+ and HSPA
     * ADSL2+, ADSL2 and ADSL
     * V.92, V.34 and V.32 Dial-Up
 * Changed the way speed limits are displayed.