add helm-yank-symbol-first
fixed up AUCTeX config

it's now heaps cleaner, and updated to AUCTeX 11.87
latex mode config bugfixes
refactor file-exists-p -> load (with noerror = true)
add battery status display to emacs mode line
.emacs: remove config for unused modes
.emacs: remove CEDET (again!)
.emacs: refactor the beginning bit of the file