adjust fonts for Ubuntu

* patched Ubuntu Mono with powerline glyphs
* deleted Inconsolata fonts
* tell vim to use Ubuntu Mono w/ Powerline patches
workaround Powerline status not initializing in GUI
disable the GUI menu
enable colorcolumn
make solarized vertsplit nicer in GUI
Update README, in case anyone else looks at this
make default GUI window narrower

While I often use VIM with vertical splits, I don't want a wide window to
be the default. Feels like it clutters up my desktop too much when I'm just
editing the odd file here and there.