.vimrc: Using Neocomplcache instead of Autocomplpop.
.vimrc: Installing syntastic.
.vimrc: Using <leader>n to open NERDTree to be more like tagbar.
.vimrc: Installing things to develop haskell.

 * Setup Tagbar to open with <leader>=
 * Setup Tagbar to create tags for haskell files
 * Avoid trying to use the global tags file
 * Setup type commands for haskell files
 * (Setup Tagbar to create scala tags)
 * (Add Cabal binaries to the path)
.vimrc: Using <leader>- for NERDTreeToggle

(To make it even more like Tagbar)