Changed default ,t binding do use CtrlP mixed mode

The mixed mode is more intelligent, searching buffers, MRU, and
the general file list. It gives you more of what you want, and
less of what you don't :)

vim/plugin/settings/ctrlp.vim

@@ -7,10 +7,11 @@ let g:ctrlp_by_filename = 1
 " We don't want to use Ctrl-p as the mapping because
 " it interferes with YankRing (paste, then hit ctrl-p)
 let g:ctrlp_map = ',t'
+nnoremap <silent> ,t :CtrlPMixed<CR>
 
 " Additional mapping for buffer search
-nnoremap ,b :CloseSingleConque<CR>:CtrlPBuffer<cr>
-nnoremap <C-b> :CloseSingleConque<CR>:CtrlPBuffer<cr>
+nnoremap <silent> ,b :CloseSingleConque<CR>:CtrlPBuffer<cr>
+nnoremap <silent> <C-b> :CloseSingleConque<CR>:CtrlPBuffer<cr>
 
 " Cmd-Shift-P to clear the cache
 nnoremap <silent> <D-P> :ClearCtrlPCache<cr>