browser/compiledcss.py: fixed an issue with detection of valid plone static
  resources.
Reimplement server-side compilation, works with cached resources now.

Instead of getting the location of a less file to be rendered we now
get its content and pipe it to the lessc command.
Merge branch 'master' of github.com:seppeljordan/collective.lesscss

Conflicts:
	src/collective/lesscss/browser/compiledcss.py
Clean up code, remove debugging procedure
Update to nodejs v0.10.29
Prepare release 1.3
Merge pull request #4 from seppeljordan/master

Reimplement server-side compilation