Change project directory structure according to application structure.
Change 'nox' configuration option to something more meaningful 'nogui'.
Rename 'Icons' folder to 'icons' (similar to other folders).
Partially add 'nowebui' option support.
Remove QConf project file.
- Take a QString in argument to avoid converting it twice. The caller already
has the IP as a QString.
- Fix bug where hostnames coming from the cache would not the displayed.
- Fix bug where the resolved hostnames would not be displayed if the IP we know
does not match the first one in the QHostInfo::addresses() list. It may come
later in the list or may be formatted differently (possible with IPv6).
- Avoid requesting again host names for IPs that were already requested recently
but whose resolution did not return a useful hostname.
