Add Chinese calendar.

Chinese calendar in site-lisp/Chinese-calender/cal-china-x.el.
Set up in init-chinese-calendar.el.
Need more customization later.
Use eimp-mode for image manipulations.

Add new file init-eimp.el.
Change the initial mode of image-mode to emacs mode in init-evil.el.
Add new functions in init-eimp.el.

Add function image-next-file and image-previous-file, hot key n and p, respectively.
Fixed initialize bug in init-eimp.el.

Add eval-after-load.
Mode changes in init-evil.el.

Change initial mode of calculator-mode and calendar-mode to emacs mode.
Small modification for C-M-i.

Don't use C-M and C-M-i for flyspell-auto-correct-word in init.spelling.el.
Change Grep Mode to emacs mode in init-evil.el.