php's build in webserver doesn't populate QUERY_STRING when none is passed.
This commit fixes the warning.

+ Fix whitespace

Signed-off-by: Chris Han <xiphux@gmail.com>
Escape project directory in shell commands

backported to my 0.2.7 forked repo
Signed-off-by: Tanguy Pruvot <tanguy.pruvot@gmail.com>