Add shortcut for moving window between two monitors
Source .xsession-local if executable
Advertise 256 colors support in screen
256 colors colorscheme, use 2 spaces for indentation
Ignore pyc and vim undo files
Fixes to vim configuration

* add wombat256 color scheme, and use it;
* add sourcing of a local .vimrc, if it exists;
* set ignorecase and smartcase;
* remove .pyc files.