Fix vundle url

Vundle has moved to
https://github.com/gmarik/Vundle.vim
replace git@github.com with git://github.com

If you don't have your ssh key setup in github, these urls will cause
all kinds of problems and wont install the plugins
ignore .netrwhist history file
Rename plugin_confing.vim to load before other configs

In order to use some plugins, included via vundle, we need to ensure
they have been initialized before our general_config.vim file is ran.
E.G. the solarized plugin needs to be present if we want to set the
colorscheme.
remove extra keybindings for ctrl-p
install NERDCommenter for quickly adding/removing comments
Change the color of the status bar the file and mode

I took this from Gabe's configs
https://github.com/gabehollombe/vim-config/blob/master/.vim/common_config/general_config.vim