Fix searching in tree playlists (doesn't hide a node's children if the children match but the node doesn't). Thanks to zorglub for the fix.

* objects.c: some more vars command stuff

* Added a minimal streaming feature

Sync default options in NSIS installer with recommended preset. I still don't like installing the activex and mozilla plugins by default as they often override other plugins and make it impossible to view videos on some/many websites.

Fix [17577]. Removing 200 lines of code is nice. Replacing them with lines that does the same thing as before is better.

* Add right-click "info" item in qt4 playlist

The scheme I used sucked big times.