fix for getEnv() error.
Merge pull request #45 from kiy0taka/master

getEnv() does not work in OSX 10.8.2
fix for show dbs formatting
put back tab in show dbs
Small refactoring of rendering module
Add ability to get string representation of UUID
Merge remote-tracking branch 'remotes/upstream/master'

Conflicts:
	mongo_hacker.js