Added CheckboxWidget (#130)

* Started Checkbox Widget (buggy)

* Added features

* Added enabling feature

* Almost finished Checkbox

* Bugfix

* Bugfixes

* Use a better name

* Optimizations

* Added explicit colors

* ...

* changed lots of things

* Almost finished CheckboxWidget

* Almost almost finished

* Use better UTF8 box

* Edited encode resources script to encode SDK resources

* Finished checkbox widget

* Forgot to delete old function

* Forgot to delete todo comment

* Fix Travis compilation

* Fix Travis compilation a second time

* Fix Travis Compilation a third time

* Fix indentation

* Fix Files encoding

* Moved CheckboxState enum in (new) Enum.hpp

* Probably looks like more generated now

* Reorder CheckboxWidget members

* Reorder checkbox state members

* Reorder members 2...

* Oops

* Reorder members functions

* Fix encoding

* Fix files encoding

* Forgot to fix one file encoding

* Fix SDK Server

* Fix encoding again -_-

* Oops

* Optimize Checkbox Widget

* Fix .gitignore

* Removed .vs in gitignore

* Moved Enums into Widgets folder

* Bugfix

* Fix Encode Resources script

* Remove double line feeds

* Rename SetNextState to SwitchToNextState

SDK/src/NDK/Sdk.cpp

@@ -36,6 +36,7 @@
 #include <NDK/Systems/ParticleSystem.hpp>
 #include <NDK/Systems/ListenerSystem.hpp>
 #include <NDK/Systems/RenderSystem.hpp>
+#include <NDK/Widgets/CheckboxWidget.hpp>
 #endif
 
 namespace Ndk
@@ -114,6 +115,13 @@ namespace Ndk
 			InitializeSystem<ListenerSystem>();
 			InitializeSystem<ParticleSystem>();
 			InitializeSystem<RenderSystem>();
+
+			// Widgets
+			if (!CheckboxWidget::Initialize())
+			{
+				NazaraError("Failed to initialize Checkbox Widget");
+				return false;
+			}
 			#endif
 
 			NazaraNotice("Initialized: SDK");
@@ -122,7 +130,6 @@ namespace Ndk
 		catch (const std::exception& e)
 		{
 			NazaraError("Failed to initialize NDK: " + Nz::String(e.what()));
-
 			return false;
 		}
 	}
@@ -168,6 +175,11 @@ namespace Ndk
 		Nz::Physics3D::Uninitialize();
 		Nz::Utility::Uninitialize();
 
+		#ifndef NDK_SERVER
+		// Widgets
+		CheckboxWidget::Uninitialize();
+		#endif
+
 		NazaraNotice("Uninitialized: SDK");
 	}