Beginning to add SDL_Mixer to the project
SoundManager, Music
Added stuff to the background. Added SoundManager Update() call  to the engine main loop so that music continues playing after the first song has finished
Changed LoggerManager to be slightly easier to use. Added PlaySoundEffect event
Added visiotr code for the PlaySoundEffectEvent
Added PlaySoundEffect event to event sender class
Added SoundComponent. Fixed a typo in HealthComponent. Added PlaySoundEffect() to SoundManager
Added sound component creation to entity factory
Fixed script function name in EventScriptCaller
Added missing resource files to version control. Fixed few issues that prevented compilation due to changes to logging manager.
Added some logging into SoundEffects-class. Fixed entity creation so that player actually has a sound component.