very simple start of CURL Request/Response wrapper classes
ensure query string is only appended to GET requests if params are present
ensure GET query string is appended to proper URL
stop throwing exceptions on non 2xx responses
ensure CURL Request class handles connection errors properly
parse curl response headers properly
expose CurlRequest::setOpt and setHeaders methods
downgrade URL not found exceptions to info to avoid clogging warn logs
Merge branch 'master' into assets

Conflicts:
	library/init.php
further work on JS pipeline