enqueue less.js on the customizer & de-queue the default stylesheet
started implementing the less.js compiler for the customizer
added option to use the less.js compiler everywhere
cleanup
fix warnings when all networks are de-selected.
less.js compiler now functional
cleanup
remove individual 'customizer' settings from fields
do not require the lessphp plugin, just recommend it.

In case the less.php compiler is not available, fallback to the less.js
compiler.
This is pretty cool!
removed customizer support for all fields
Merge pull request #511 from shoestrap/customizer

Customizer