add ibuffer settings to filter unsaved buffers
change org-agenda-files
delete trailing whitespaces
misc config settings
remove dired-details(+) packages, seems already included in dired+
disable rectangle-mark commands
update auctex package
remove old org-mode package, it is the same as the one shipped with emacs24.3
disable double loading after init for packages
menu-custom.el tends to be machine-specific
update org-mode package
update magit package
add markdown-mode
key binding change
typos in key binding
enable downcase-region command
enable set-goal-column command
update ido settings

Most of key bindings are provided in ido-mode by default.
update org-mode setting: org-publish -> ox-publish
Add Jedi-related setup for python auto-complete