Remove comment and whitespace irks from .vimrc

Editing annoyances relieved in vimrc:

- removed automatic commenting
- added highlighting to EOL whitespace
- updated format options to show trailing whitespace

Also, I fixed accidental commits of undo and weechat log files.
Thankfully, the log files didn't really have anything sensitive
in them yet, because I had fixed this problem once before.

Apology to my future-self: I know this should've been multiple
commits but I really had too much to do to groom my commits or
rebase. Now then, future-self: stop being so whiny.
Merge branch 'fedora19' of github.com:mkelley33/dotfiles into fedora19

Conflicts:
	.weechat/script/plugins.xml.gz
	.weechat/weechat.log