reorganize requirements files, two scoops style
use environment variables for settings
use environment variables for the database url as well, improve defaults
add debug toolbar and debugger (fixes #3)
remove local.py.dist file that's not used anymore
update requirements installation instructions
add instructions for grunt + bower installation
update syncdb instructions, add a list of available env var settings
Merge pull request #5 from team-rawbot/issue-3

Reorganize requirements and settings files