common.node.js: WARNING: NO BACKWARD COMPATIBLE.

Add root mode for json_decode_file().
Add 404 header points for buildPage().
buildPage(): REMOVE implicit parameters.
buildPage(): CHANGE SCHEME %%var[index]%% --> %var[index]%.
Add deep indexes feature for array placeholders.
Deprecate evalArrayByPath() by array_get_deep().
mailProject(): CHANGE CONSTS NAMING.
Mq: NO BACKWARD COMPATIBLE. Remove consts.php requiring.