Warnings fixs

[yagui]

This commits fix all the warnings that are shown during compiling (tested only in Linux).

• Warnings in juce_LassoComponent.h
  warning: invalid use of incomplete type ‘class juce::LookAndFeel’ getLookAndFeel().drawLasso (g, *this);

was fixed followinf latest JUCE library versiob
https://github.com/WeAreROLI/JUCE/blob/cabcbde0e2ed17cb98299f04b91f7af19f86b6f5/modules/juce_gui_basics/juce_gui_basics.h#L298

• Warnings in okFrontPanelDLL.h
  warning: ‘template class std::auto_ptr’ is deprecated [-Wdeprecated-declarations]
  typedef std::auto_ptrOpalKellyLegacy::okCFrontPanel FrontPanelPtr;

was fixed following
https://stackoverflow.com/questions/45053626/error-templateclass-class-stdauto-ptr-is-deprecated
auto_ptr -> unique_ptr

• Warning in EngineConfigWindow.cpp
  warning: ‘void juce::Button::setToggleState(bool, bool)’ is deprecated [-Wdeprecated-declarations]
  b->setToggleState(true, false);

was fixed using the note
https://github.com/yagui/plugin-GUI/blob/56aa112f8b6160b7cf184b280cf2c3d338441fc9/JuceLibraryCode/modules/juce_gui_basics/buttons/juce_Button.h#L349

The new version is
https://github.com/yagui/plugin-GUI/blob/56aa112f8b6160b7cf184b280cf2c3d338441fc9/JuceLibraryCode/modules/juce_gui_basics/buttons/juce_Button.h#L95

Should be NotificationType instead of bool.
I asume that 'false' should be juce::NotificationType::dontSendNotification
Not sure if that is the right choice

(This one is not present anymore)

• Warnings in PracticalSocket cpp/h
  warning: dynamic exception specifications are deprecated in C++11 [-Wdeprecated] throw(SocketException)

was fixed following
https://docs.microsoft.com/en-us/cpp/cpp/exception-specifications-throw-cpp?view=vs-2019
throw() -> noexcept(true)
throw(type) -> noexcept(false)