Load custom.el at end of init.el for custom-theme

* Because the customized variables is referred by packages, load custom.el at
  beginning of init.el.
  and the customized face should overwrite color-theme so load custom.el again
  at end of init.el
init-window: Move window by C-c <arrow key>
init-window: Move window by C-c C-<arrow key>
init-term-mode: Enlarge term-buffer size to 10240
Open new buffer with normal mode
change C-w key mapping in inster mode
change C-w v mapping to open new buffer