Merged from diego
Added mouse press event handling and handled qt bug
Merge branch 'diego' of https://github.com/nppangband/NPPAngband_QT
Show a mark if a visible artifact is seen
Show the monster under the grid you click
Cleanup. Added shape methods
Added debugging buttons in main window
Some fixes
Testing zoom
Code cleanup
Zoom
Testing animations!
Adding ball spells
Removed animation proxy
Ball explosion
Improved ball spell
Testing
Improved ball spell and added bolt spell
Ball and bolt animations
Arc spell