Revert "update plugin neocomplcache"

This reverts commit 1940e9128c30d5314e3767cf9b2ac8a123b3f15a.
Revert "Revert "update plugin neocomplcache""

This reverts commit af6e8d6d31a27b64b22069677878ed4be944806f.
update vimrc, jump cursor back after auto clean trailing space characters before saving file
Merge branch 'update' of https://github.com/mantislin/vim-config-mts
Revert "Merge branch 'update' of https://github.com/mantislin/vim-config-mts"

This reverts commit b7f70f7e67505ffeea0f6f23e33effc99e784187, reversing
changes made to ab9474ea5b3da4c9b3c382f53dd139c67723d9d2.
update vimrc, delete useless comments