i3 - Remove disk info from status

Displaying free space on just one filesystem isn't very useful, so
remove it.
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
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.
irb - Ensure that prompt occurs on a separate line
vim - Use space as the leader for plugin mappings

Switch leader from comma to space, the former has a useful default
mapping, while the latter doesn't.
vim - Update fugitive plugin

* vim/bundle/fugitive 8f0b8ed...fd297ad (11):
  > Set winfixwidth
  > Accidental omission from previous commit
  > Support :Gcommit --patch
  > Improve keepjumps situation
  > Turn off swap files in all URL buffers
  > Check `&diff` first in fugitive_diff autocmds
  > Fix version regex
  > Improve heuristics for status section detection
  > Place extra emphasis on a clean history
  > Look for $GIT_DIR and $GIT_WORK_TREE
  > Store more than just dir in s:temp_files
git - Add "tree" alias

Create an alias to give a tree-style listing of various branches down to
their common ancestor.
vim - Add textobj-comment plugin

Add plugin defining text object for comments.  Required upgrade of
textobj-user plugin.
vim - Add count_jump plugin

Plugin required by SameSyntaxMotion plugin which will be added next.
vim - Add SameSyntaxMotion plugin

From vimscripts #4338, unfortunately not available from github.
vim - Update unimpaired plugin

Mainly want the change for opening folds

* vim/bundle/unimpaired a029dc2...f4a9143 (8):
  > Add a FAQ entry about non-US keyboards
  > Add option toggle for 'virtualedit+=all'
  > Add '[ob', ']ob', and 'cob' mappings for bg switching
  > Setup paste also disable mouse
  > open folds when using cnext and lnext mappings
  > Document accidentally committed paste maps
  > Merge pull request #49 from maximkulkin/move_command_selection_repeat_support
  > Fix spelling
tmux - shorter name for default session

Spelling out "default" in full tends to result in information being
truncated in the status bar.  Abbreviate it.
vim - Change colors for IncSearch

Exchange plugin uses highlighting for IncSearch, and the normal
vividchalk colors for that make it impossible to see the cursor when
it's in that section.  Change the background color a bit so that the
cursor is visible.
vim - Add basic syntax file for Burt detail files

Highlight section headers and fold their contents.
zsh - Better default separator for burt_summary_db

Comma was a bad choice as the default value for BURT_SUMMARY_DB_GET_SEP,
since many fields contain that.  Switch to a non-ASCII character that is
very easy to see and unlikely to be included in actual data.