replace pangloss with jelera

There are some weird things going on in the syntax file with pangloss,
choosing to switch to jelera for the time present
change the escape time in tmux to zero

recommended by @tmiller, from
http://www.tylercipriani.com/2013/09/12/important-lines-in-my-tmux.html
Merge remote-tracking branch 'thefishbowl/master'