Project modernization (#630)

* Fixed boats falling and a TP glitch #266

* Replaced every C-style cast with C++ ones

* Replaced every C-style cast with C++ ones

* Fixed boats falling and a TP glitch #266

* Updated NULL to nullptr and fixing some type issues

* Modernized and fixed a few bugs

- Replaced most instances of `NULL` with `nullptr`.
- Replaced most `shared_ptr(new ...)` with `make_shared`.
- Removed the `nullptr` macro as it was interfering with the actual nullptr keyword in some instances.

* Fixing more conflicts

* Replace int loops with size_t and start work on overrides

Minecraft.Client/Common/Tutorial/TutorialHint.cpp

@@ -9,7 +9,7 @@
 
 TutorialHint::TutorialHint(eTutorial_Hint id, Tutorial *tutorial, int descriptionId, eHintType type, bool allowFade /*= true*/) 
 	: m_id( id ), m_tutorial(tutorial), m_descriptionId( descriptionId ), m_type( type ), m_counter( 0 ),
-	m_lastTile( NULL ), m_hintNeeded( true ), m_allowFade(allowFade)
+	m_lastTile( nullptr ), m_hintNeeded( true ), m_allowFade(allowFade)
 {
 	tutorial->addMessage(descriptionId, type != e_Hint_NoIngredients);
 }