Merge pull request #1160 from isao/rmcli1

do not install/symlink "mojito" in $PATH
rm all cli code
rm cli unit tests
rm require('management/utils'); replace libutil.warn with console.warn
updates deps & devDeps post cli removal
add mojito-cli as a devDep

some ci flows require start, jslint & docs.
fix npm run-script cli usage

when scripts are run via npm run-script, node_modules/.bin
is added to $PATH, so `mojito` will resolve to the mojito-cli
package installed globally (i.e. developers) or locally (i.e.
in CI).