Implement disablescreensaver

ref. http://askubuntu.com/questions/291135/how-to-stop-screen-going-black-after-10-min
Modify from "xset s 0 0" to "xset s off"
Merge branch 'disable-screensaver'
Swap digits and symbols in input mode
Swap only when a filetype is Clojure
Swap brackets

[] -> ()
{} -> []
() -> {}
Implement auto complete end brackets feature

ref.
  https://github.com/sue445/dotfiles/blob/38d5a5810efa612320e056a2e403279afe2d9d65/_vimrc#L49-L67

This reverts commit 8bb95f20035f957857a95a07f3fcf8946b4710e3.
Revert "Swap digits and symbols in input mode"

This reverts commit 1bc9717acf787998ce477b4bc1d10d834fff7c19.

Conflicts:
	.vimrc
Rename from "swap_digits_symbols" to "swap_brackets"
Merge branch 'vim-swap-brackets' into vim-swap-digits-and-symbols

Conflicts:
	.vimrc
Rename the branch from "vim-swap-digits-and-symbols" to "vim-configurations-for-clojure"
Merge branch 'vim-auto-complete-end-brackets' into vim-configurations-for-clojure

Conflicts:
	.vimrc
Merge branch 'vim-configurations-for-clojure'