Shell: alias "gl" to "git log"

I type "git log" a lot. I might be able to save some typing with this
alias. We'll see if it sticks.
Slate: update internal resolution for 13" Retina Macbook Pro

When I switched to this laptop, my autoswitching Slate configuration
stopped working because my screen has a different resolution. After some
Googling, it seems that the logical resolution of this display is
1280x800. I decided to update my configuration for "internal" instead of
adding a new alias was the way to go because I don't plan on going back
to my old laptop.
Vim: fix "else" JavaScript snippet

When I was going through my snippets earlier to make them more
conventional, I replaced the wrong part of this snippet, making "else"
trigger a code block that starts with "el {". This commit reverses that.