Wacspace screen configuration hack

Don't restore wacspace if screen configuration has changed.
Some new snippets
Git toggle whitespace and other goodies
Ignore gist cache
mc-lists and custom vars
Some new eshell aliases
Some visual tweaks
Temporarily disable edit-server
Require newlines at the end of all files
Fix java classpath environment var
Hipchat tweak
Don't insert encoding comments for Ruby
Try to fix python return-and-indent
Wacspace tweaks