Removed many usage of READABLE_STRING_GENERAL in favor to READABLE_STRING_8
to avoid potential nasty issues in user's code
URI-template is working only with STRING_8, then changed any _GENERAL or _STRING_32 to _STRING_8
Fixed implementation of REST_REQUEST_AGENT_HANDLER to avoid wrong path in inherited routine.
Allow to build a URI_TEMPLATE from another URI TEMPLATE,
this way, if later we have more attribute (status or settings) to URI_TEMPLATE,
we'll be able to change the `template' without breaking the settings