Vim: Add bundle.

https://github.com/ggreer/the_silver_searcher
https://github.com/golang/lint
https://github.com/marijnh/tern
https://github.com/marijnh/tern_for_vim
https://github.com/mattn/jvgrep
https://github.com/nsf/gocode
Vim: Fix QuickFix Window settings.
Vim: Fix local grep mappings.
Vim: Fix Unite plugin settings.
Vim: Fix Operator Reverse plugin settings.
Vim: Fix Lua plugin settings.