Moves torque renderer to its own directory
Split factory and renderer.

Extracts sql and format functions in the process.
Extracts PSQL Adaptor
Re-orgs code to have factory constructor at start of file
Merge branch 'master' into torque-renderer-directory

Conflicts:
	lib/windshaft/renderers/torque.js
newline at end of files
Merge pull request #232 from CartoDB/torque-renderer-directory

Split torque renderer