Uncomment docs of tango.Util.instance() and build docs for other static methods
This is the continuation of !408 (closed).
Just in case it helps others, I thought it may be useful to add to the documentation the
tango.Util.instance()
argument as it was explained in this forum post.
This MR also enables documentation for the following static methods:
- ApiUtil: instance() and cleanup()
- Connection: get_fqdn()
- Exception: throw_exception(), re_throw_exception(), print_error_stack(), print_exception(), throw_python_exception(),
- Util.instance()