Various fixes improvements:
+ Added support for VST parameters control for windows.
+ New `Close` button for VST parameter controls.
+ Faster GUI for all instruments, effects-loading, not only VSTs,
and both one-instrument track window mode and normal window
mode should be supported.
+ Better integration for VST GUIs on Linux, e.g. plugin window
should not stay always on top of other windows.
+ VST GUI overlook should remain same with different wine setups
( except for whole virtual desktops emulations ).
+ VST effect control window merged with VST effect editor window
should be more easier to control.
+ Little corections at effectviews model updates of instrument
tracks effect chains.
Signed-off-by: Tobias Doerffel <tobias.doerffel@gmail.com>