i3 - Remove disk info from status

Displaying free space on just one filesystem isn't very useful, so
remove it.
zsh - Cleanup setting of $PAGER

- Don't set $PAGER to zless.  On OS X zless uses $PAGER to display
  files; so that setting doesn't work.
- Use anonymous function to prevent creating global temporary variable,
  even though it was being unset.
- Use $commands associative array in place of $(whence).
- Remove non-sensical instances of PAGER="$PAGER".
- Don't alias less to itself.
zsh - Use view for "L" alias if $EDITOR is vimx
zsh - export $P4CONFIG
git - Enable autocorrect of subcommands
tmux - Create default session when server starts

Have server automatically create a default session when it starts so
that I can use "ssh -t some.host tmux attach" without needing to worry
about the case where no session is running on the destination.
tmux - Make zsh default shell if it exists
tmux - Put status on top when possible

Use if-shell as a hackish way to set the status-position option if its
available without causing errors when it isn't.
git - Ignore a couple more vim swap file names
mail - config for Triangle.rb forum
vim - add exchange plugin
Merge remote-tracking branch 'o/zim' into frell

* o/zim:
  vim - add exchange plugin
  mail - config for Triangle.rb forum
  git - Ignore a couple more vim swap file names
  tmux - Put status on top when possible
  tmux - Make zsh default shell if it exists
  tmux - Create default session when server starts
  git - Enable autocorrect of subcommands
  zsh - export $P4CONFIG
  zsh - Use view for "L" alias if $EDITOR is vimx
  zsh - Cleanup setting of $PAGER
vim - Fixed version of editing perl module by name

Had previously commented BufReadCmd autocommand which would attempt to
find perl module for any file where the name contained "::", since that
prevented editing files which actually matched that pattern.

Now have an improved version which first checks to see if such a file
exists, and just reads it if found.
vim - autocommand to help viewing burt detail files

Convert burt:/ followed by a number to path to the specified burt detail
file.
git - Remove config for Corvisa gitorious
git - Allow cloning from github using "gh:"
vim - update syntastic and you_complete_me
vim - add delimitMate plugin
vim - Allow "jl" to exit insert mode

Allow exiting insert mode by a simple sequence of two keys that are in
home positions, but almost never occur together in text.
zsh - Allow "jl" to exit vi insert mode

Previous commit did this for vim, do it for zsh as well.