* Implemented a text input box to name a new theme.
* Made loading of themes asynchronous in a thread, controls are disabled but at least the window appears ASAP.
* fixed app sig
* Implemented setting colors and fonts on Haiku.
* Implemented setting the window decor, but doesn't work as we don't have any decorator installed.
* Enable all addons.
TODO: forbid quitting while themes are loading!
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23508 a95241bf-73f2-0310-859d-f6bbb57e9c96
