Removed the old streaming wizard\nSplitted the interface file into interface+extrapanel\nExtrapanel is now a notebook\nReworked the video extrapanel (removed ratio,added filters)\nImplemented a graphical equaliwer

TODO: updates more stuff to do :)

* src/misc/mtime.c, include/mtime.h: new common "date" API for date incrementation without long-term rounding errors.
  (is going to replace audio_date_t).

* modules/demux/playlist, src/input/stream.c: fixed a shitload of bugs in playlist demuxers + simplified a lot.

with the subtitles hotkey (thank you gcc)

* modules/gui/wxwindows/menus.cpp: added equalizers to the menus.