Change vim colorscheme.
Fix syntax highlight bug.

This bug is occurred by spell checker for Japanese.
So, I remove the code of spell checker.
Delete unnecessary NeoBundle code.
Lasy load vim-choosewin.vim.
Fix mapping bug.
Lazy load open-browser.vim
Lasy load unite.vim.
Lazy load input complement plugins
Lazy load gist-vim.
Delete unnecessary colorscheme.
Lazy load vim-over.vim.
Tweak.