jsdoc: add source filename to "wrong level" error

Signed-off-by: Jiří Janoušek <janousek.jiri@gmail.com>
jsdoc: don't print header "Description", etc.

Signed-off-by: Jiří Janoušek <janousek.jiri@gmail.com>
jsdoc: show unique params for signal object params

@param String request.url
@param Boolean request.approved

produdes signature (emitter, request) instead
of (emitter, request.url, request.approved)

Signed-off-by: Jiří Janoušek <janousek.jiri@gmail.com>
jsdoc: fix canonical name for child symbols

Signed-off-by: Jiří Janoušek <janousek.jiri@gmail.com>
Add jsdoc to Nuvola.Core

Signed-off-by: Jiří Janoušek <janousek.jiri@gmail.com>