VID-2038 Add bucky profiling to User Profile

Add profiling to UserProfile.js. Specifically this is now profiling the opening of the user edit lightbox, a save after a user changes their information, and when a user uploads a new avatar from their computer. Additionally there was a small css change to change the cursor on sample avatars, and I renamed a couple methods to use more accurate names.

Ticket: https://wikia-inc.atlassian.net/browse/VID-2038
My thinking was that we'd be more interested in profiling the success path than the fail path. Do you think it'd be helpful to profile the fail too? If so, maybe I could split it out and have a 'renderLightboxSuccess' call and a 'renderLightboxFail' call. Otherwise we're kind of profiling 2 different things here.