refactor my keybindings settings.

define shorter prefix map name.
put prefix map together.
with more good prefix map definition.
add python source code file template snippet.
add jekyll.el and org-jekyll for blogging.
fix error: void variable python-mode-map.
disable org-mode to use ido.
update flyspell usage comment.
update abbrev save file.
add JSON support and setup for Emacs.
add json-reformat recipe for el-get in user custom directory.