[devtools] Create "newcube" in current directory by default Instead of using "cubes path", which in many cases will be something wrong (like <prefix>/share/cubicweb/cubes) now that cubes are regular Python packages.

missing-dep-for-interpreter make => make | build-essential | dpkg-dev (usr/*/cubicweb/skeleton/debian/rules)
embedded-javascript-library usr/share/cubicweb/cubes/shared/data/jquery.js