* Changed most gui classes to use shared pointers
* Store and use IImage as shared_ptr
* CSpellWindow redesign
* AdventureMapClasses cleanup
* CLabel: store background as smart pointer
* Store CObjectList items as smart pointers
* Removed destroy function of list item
* Store toggle buttons as smart pointers
* Use CComponent as smart pointer
* Attempt to fix artifact merchant drawing
New widget specifically for volume settings.
Replace previous implementation using 10 toggle buttons.
Enable indicator animation
Fix indicator ghosting when drag and releasing
Add scroll capability to volume
Volume now can be adjusted from 0 - 99 with the mouse or the scroll wheel
CToggleGroup. Originally when I added initialization for selectedID I didn't find out that -1 is used for "random" buttons. So as result I fixed uninitialized variable usage, but break initial button state change in RMG options because setSelected ignore state change request because it's see -1 button already marked as selected.
- implemented switch in settings screen
- implemented "0 speed", animation-free. *may* also work for player-owned heroes
- removed no longer used creature window switch
- renamed CAdventureMapButton to more expectable CButton
- merged CButtonBase into CButton
- created more generic class for clickable elements
- created more generic class for selectable elements
- renamed CHighlightableButton to CToggleButton
- renamed CHighlightableButtonsGrous to CToggleGroup
- minimized differences between API of all these classes
- removed all but one contructors in buttons, with same parameters across all classes
